It's not okay to harass anyone and one woman had to teach some idiot men that lesson.
As she was riding her bike, two men in a van pulled up to her at a stoplight. They started catcalling her, reaching for her and were rude to her when she didn't respond to their unwanted advances. When the light changed, they drove off, but she followed them and when she caught up to them, she tore the side view mirror off their van.
The whole thing was caught on the helmet-cam of the motorcyclist behind her, who also had some choice words for the men in the van.