I noticed several of these posters in Alejandro's neighborhood advertising a massive rally at the Monument to the Revolution yesterday afternoon.
The rally was a farewell to Claudia Sheinbaum, the chief of the Mexico City government. (Since Mexico City is now a state of the Mexican Republic, mayor is not exactly the correct term for her position.) Sheinbaum is stepping down from the post to run as a candidate in the 2024 Presidential election.
I thought that perhaps the rally would be cancelled due to the extreme heat. It didn't seem very wise to hold an outdoor rally with thousands of people in 90-degree weather. The government health ministry had issued a heat advisory and warned people against prolonged exposure to the sun. But the show must go on. I checked the webcam of the plaza by the monument yesterday afternoon, and indeed it was filled with people. City workers were expected to attend. Alejandro talked with the garbage man yesterday morning, and he said they were required to be there. Bus transportation had been arranged to take groups of senior citizens to the rally.
I just hope that nobody collapsed from heat stroke.