I could see the entire scene you just painted. I saw you crossing the street, the traffic, the vile man.
I could also see how it could have been a little funny at the time to your friends. Like you mentioned, your life was never in danger.
But, wtf? Do women ever get the irresistible urge to grab a stranger's dick while walking through a crowded street? I'm guessing no.
I'm sorry this happened to you. It's a wonderful message to woman that this behavior is unacceptable. Keep using your voice and thank you for sharing.