Why yes, I did. Interesting isn't it, that he feels comfortable telling the world that this is what the gringos "must do". He even set a time limit for us to comply with his demands. How thoughtful.
It's a characteristic of Mexican-Spaniard machisimo culture. Aggressive demands and threats are made until the intended victim obliges. In other words, thug culture. Circa 1500 AD. Not much has changed there since then, at least socio-politically. It's got a better veneer lately, but it's really the same old thing.
Basically, the Mexican Uber-class has sized up our president and his acolytes and found them to be rather easy marks. So the demands are incessant and strident. You can find the same behavior on lots of street corners in Queens and Brooklyn, and behind closed doors where the Bonnano's and the Gotti's and the Genovese family operate.