Some people like to be offended by anything and everything. Trump wants to do something in his own country and has chosen the perfect way to get the message out without having to spend millions of dollars in advertising. Yet people want to stop him from coming to this country, a country where he hasn't called for a Muslim ban or anything like it.
He doesn't hate Muslims, as shown by the fact that he does business deals with them, just that the ISIS issue needs to be sorted out. And yes, ISIS is a Muslim terrorist organisation.
As for Trump saying that our police are scared of Muslims, well the top brass might deny it (but then they're lily livered apologists & useful idiots for Islamists), but the normal policemen & women are saying he's right.