take liberties with
take liberties with someone or somethingand make free with someone or something
to freely use or abuse someone or something. You are overly familiar with me, Mr. Jones. One might think you were taking liberties with me. I don't like it when you make free with my lawn mower. You should at least ask when you want to borrow it.
take liberties with something
to change something to suit your needs, esp. when writing a story or book The play takes liberties with history, but it brings to life the people from so long ago.