Update 11/21:
Just wanted to provide a brief update on the protests yesterday. First of all, I am completely fine. I live 2 miles away and was in no way affected. There were no deaths at the protests and the media is reporting just 16 arrests, which is pretty good in my mind. Here are some pictures. This first one is in the Zócalo, or central plaza, of Mexico City where the governmental palace is.
The march started here at the Angel of Independence and then marched down the main avenue in Mexico City called Reforma. It passed in front of the US Embassy, which is on Reforma.

This is the protesters marching down Reforma.
The government planted members of the military in plains clothes, as seen in the back of this military truck. The strategy is called Agent Provacateur. https://en.wikipedia.org/wiki/Agent_provocateur The idea of these plains clothes military is to incite unnecessary violence and to essentially discredit the entire movement as being violent and criminal, when in fact the vast majority of the protesters are completely peaceful. The agent provacateur can also act as a pretext for the police or military to forcibly remove protesters from an area because they are acting violently.
Although the students disappeared almost three months ago, it appears as though the movement is gaining steam rather than losing it. There were coordinated protests in Times Square and Washington DC. Also, celebrities like Calle 13 (below) and soccer star Chicharito have started to publicly support the movement.
That´s all for now. But I expect that this issue is just getting started.
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Just received this message from the US Embassy. I thought it was relevant given my last post about the 43 students. Protesters are expected to shut down the Mexico City airport today as well as have several massive demonstrations. The government cancelled its annual military parade for today. One interesting point is that "The Mexican Constitution prohibits political activities by foreigners; such actions may result in detention and/or deportation." So better stay away.
United States Embassy Mexico City
Emergency Message for U.S. Citizens:
Mass Demonstrations Expected in Mexico City / Country of Mexico
November 20, 2014
(La versión en españolsigue la de inglés)
This message is to inform U.S.citizens that several mass demonstrations are expected in Mexico City on Thursday, November 20, 2014 to protest the disappearance of 43 students in Guerrero state. Beginning at approximately 10:00am, university students plan to blockade all avenues and boulevards leading to Mexico City’s Benito Juarez international airport such as: Circuito Interior, Blvd. Puerto Aereo, Eje 1 Norte, and Calzada Ignacio Zaragoza. Traffic to and from theairport is expected to be severely impacted by the blockades. The Embassy has advised personnel to consider changing travel plans or alternate routes toand from the airport, including travel via metro (Terminal Aerea stop on the yellow line). U.S. citizens arriving into Mexico City’s airport shouldexpect to wait at the airport for several hours for the protest to end. If riding the metro or the city bus system, U.S. citizens should take extremecare with valuables and belongings. Passengers arriving at any airport in Mexico should take only authorized airport taxis after pre-paying the fare atone of the special well-publicized booths located inside the airport. U.S. Embassy employees in Mexico City are prohibited from using “libre” taxis (hailed on the street), and are authorized to use only “sitio” (regulated stand) taxis.
Additionally, several social organizations, unions and university students will meet at approximately5:00pm at the “Plaza de las Tres Culturas” (Tlatelolco), the Revolution Monument, and the Independence Monument (Angel) to then march to Mexico City’s central square (Zócalo). Traffic along the planned routes, Paseo de laReforma (where the Embassy is located), and nearby roads will be impacted by the protest.
There are reports that similar protests may take place in other cities in Mexico. U.S. citizens are urged to monitor local newsoutlets for information about possible protests in their area.
The Mexican Constitution prohibits political activities by foreigners; such actions may result in detention and/or deportation. Travelers should avoid political demonstrations and other activities that might be deemed political by the Mexican authorities. Even demonstrations intended to be peaceful can turn confrontational and escalate intoviolence. Demonstrators in Mexico may block traffic on roads, includingmajor arteries, or take control of toll booths on highways. U.S. citizens are urged to avoid areas of demonstrations, and to exercise caution if in the vicinity of any protests.
Review your personal security plans; remain aware of your surroundings, including local events; and monitor local news stations for updates and any news of other protest activity throughout the country of Mexico. Maintain a high level of vigilance and take appropriate steps to enhance your personal security.
We strongly recommend that U.S. citizens traveling to or residing in Mexico enroll in theDepartment of State’s Smart Traveler Enrollment Program (STEP) atwww.travel.state.gov. STEP enrollment gives you the latest security updates, and makes it easier for the U.S. embassy or nearest U.S. consulate to contact you in an emergency. If you don’t have Internet access, enroll directly with the nearest U.S. embassy or consulate.
Regularly monitor the State Department's website, where you can find current Travel Warnings, including the Travel Warning for Mexico, Travel Alerts, and the Worldwide Caution. Read the Country Specific Information for Mexico. For additional information, refer to “A Safe Trip Abroad”on the State Department’s website.
Contact the U.S. Embassy for up-to-date information on travel restrictions. You can also call1-888-407-4747 toll-free in the United States and Canada or 1-202-501-4444 fromother countries. These numbers are available from 8:00 a.m. to 8:00 p.m.Eastern Time, Monday through Friday (except U.S. federal holidays). Follow us on Twitter and Facebook, and download our free Smart Traveler iPhone App to have travel information at your fingertips.
The U.S. Embassy in Mexico City is located at Paseo de la Reforma 305, Colonia Cuauhtemoc, Mexico, D.F. and is open 8:00am to 5:00pm, switchboard phone number (dialing from the United States) 011-52-555-080-2000,http://mexico.usembassy.gov/eng/eacs_hours.html. If you are a U.S. citizen in need of urgent assistance,please dial the main switchboard number and ask to speak to an American Citizen Services staff member for assistance.