You could get sued, but you would almost certainly win, as evidenced by the Westboro Baptist Church who won a Supreme Court case after being sued for witnessing

You could get sued, but you would almost certainly win, as evidenced by the Westboro Baptist Church who won a Supreme Court case after being sued for witnessing their Christian faith with messages like "Thank God for Dead Soldiers" and "You Are Going to Hell" at a soldier's funeral: https://en.wikipedia.org/wiki/Snyder_v._Phelps https://en.wikipedia.org/wiki/Snyder_v._Phelps