If you see something, say something.
During Sunday's presidential debate, Donald Trump spoke about his "Muslim ban," a proposed policy he referred to as "extreme vetting from certain areas of the world."
Trump said "people are coming into our country like we have no idea who they are," and called immigration "the great Trojan horse of all time."
"I mean, whether we like it or not, and we could be very politically correct, but whether we like it or not, there is a problem," Trump said.
"And we have to be sure that Muslims come in and report when they see something going on," he added. "When they see hatred going on, they have to report it."
Patrick Semansky / AP