Some Latino activists, such as the Brown Berets de Aztlan, will be stationed at the Mexican side of the border to advise border crossers to take another route. Others will be there to monitor the situation.
Why would you meet a border crosser in Mexico and advise them to take another route, if they want to cross leagally? This group wants to hold all legally entitled immigrants at the crossing in Mexico to block the point of entry. You can't block an entry point if you are advising them to take another route.
Isn't blocking a legal crossing illegal to begin with?