There's nothing to say other than this is some real Orwellian shit.

Thrown in jail for 3 months because of offensive text? what the fuck is wrong with the UK and how have they allowed their government to get this way?

For some context..

Joke: "What's the difference between Mark Bridger and Santa Claus? Mark Bridger comes in April."

Offensive? Maybe to some, but NOTHING to be arrested over.