Professional Footballers?

So we've seen recently several professional footballers convicted of serious crimes yet seem to be able to continue playing. Why?  Adam Johnson is a convicted paedophile. There seems to be a campaign to find so called paedophile coaches going back decades. They never work with children again, quite right. I ask why the difference. Teachers, council workers etc. Lose their jobs if convicted of crimes, so how can footballers continue? They are very much role models for the young and are very privileged and well rewarded. Isn't it about time the FA had rules to bar convicted criminals from the game regardless?