I have only been physically assaulted once in my adult life, and it was by a homeless person in Santa Monica on the Third Street Promenade.
I was crossing 3rd at Wilshire when I heard a man shout profanities from the sidewalk on the far side. I snapped my head to see what was the commotion and mistakenly made eye contact with him. He leaped up from a sitting position and sprinted halfway across the street to throw a punch at me.