She wasn't screaming profanities. You need to read the article...you are making assumptions.
Transit Police and some Metro officials say Saoutis was protecting the peace by removing a woman who had overstepped the boundaries of civil behavior because she was loudly cursing into her phone.
Aaron acknowledged that she was loud on the phone but said she wasn't cursing and lobbed a profanity only after Saoutis grabbed her.
I'm going with the cop on this one.
Learn to read. It makes life easier.