if you read the rest of the article, it looks like the woman was arrested for posting signs on other people's property without their permission and was being a nuisance. I know the area they're referring to and it's a pretty liberal environment, she must've been a total whacko to get arrested over this.
In this case I'm pretty sure it had nothing to do with the content of her posters
edit: just read "assault of two Cleveland Heights police officers" after posting. I knew there was more to this...