I'm not sure the police would be quite so quick off the mark to prosecute someone who, say, insulted someone in a wheelchair, with a comparable insult.
I don't think the courts took reasonable account of the fact that Kate had blocked Hayden on twitter - so how was it harassment?
Plus there seemed to be incorrect info about tweets said either in court, or in the reporting of the case - if someone retweets something from an account that blocked you, you don't get to see it, it says "tweet unavailable" and tweets from protected accounts cannot be retweeted at all. It's pretty unlikely that you'd come across a tweet from an account that has blocked you - unless you purposely look for it.
Good luck Kate 