It seems that this mall has a history of asking people to leave, when they're wearing "Peace" T-shirts. I don't agree with the mall's policy.
They're claiming that, since the mall is private property, they can tell anyone to leave. However, as I read it, they first asked these men to remove their shirts. When that was refused, they were asked to leave. The citation was for disorderly conduct, which is a catchall charge. It'll probably be dismissed and these men will sue the mall for civil rights infringement.