Trump rally mix-up

The headline read:

“Trump slams security for being politically correct.”

The subhead read:

“The president wasn’t happy with one of the security guards assigned to his campaign rally in Pennsylvania on Tuesday night.”

My question is, “Why was anybody who cares about the well-being of others at a Trump rally?” According to Republicanism and our belief in the sanctity of capitalism, society works best when self-interest drives our actions. (See–I can prop up a straw man, too.)