People dislike Chelsea for a lot of reasons, but their pressurizing of officials is probably the best, clearest, most well-documented reason they deserve criticism (apart, perhaps, from the nature and origin of the club's wealth).
Mourinho spends every match pouring a stream of comments, complaints and abuse into the fourth official. Rui Faria, his right-hand stooge, is always prepared to start a fight with anyone and everyone - so long as there is a crowd of people between himself and the person he's shouting at. They always have a very clever striker up top (Drogba, Costa) who knows when to take a tumble, and Brave John Terry is always in the ear of the match official to make sure he makes the "right" decision.
Make no mistake, every club engages in these tactics at times. But nobody does it more often, more flagrantly or more successfully than Chelsea Football Club.
