It's no surprise that a Mexican politician would object to Donald Trump's proposed border wall - but only in Trump's America could one raise those objections in the US President-elect's own building.
In other words: The protest is coming from inside the house.
That's exactly what happened today when Mexican politician Gerardo Fernández Noroña walked into Trump Tower, sat down in front of the golden lift bank, and held up a sign showing a map of the United States labelled, "Mexico in 1830".
After quickly being approached by Trump Tower security staff, Fernández Noroña seemed to initially resist leaving the lobby area, where media cameras and reporters are stationed each day to monitor comings and goings from Trump's transition meetings in the tower's upper floors.
Security officers appeared to convince him to move a short way away from the lifts before he sat back down again. New York City police officers quickly escorted him from the lobby.