I'm going to start wearing a safety pin
The symbolism is your determination that these people remain safe regardless of what the Alt-Right may desire or intend.
I'll be wearing one, and I hope you will, too.
I understand that some of the crazier and more presumptuous elements of the Left frown on white people wearing safety pins for this reason because too many white people voted for Trump. Well, I didn't, and I am no more concerned about their disapproval than I am about the disapproval of any other racists and hatemongers.