Criminal,
In general, people need to be careful of the "NHL reputation" equivalent of selection bias in statistics when viewing Kaleta.
I'm not sure Kaleta's any dirtier than other so-called (and often justifiably so) dirty players. And I'm not saying this in a condescending way, but I've been watching NHL hockey longer than you've been alive.
For example, Mike Peca left his skates for probably 85% of the open-ice hits he made during his career. That's supposed to be illegal. Old video - you can see him routinely launching himself 4-6" up before impact. I don't recall him ever being called for it. Was Mike Peca dirty? If he wasn't the Sabre captain, and less talented, would he have been called for it?
I agree Kaleta has been justifably penalized and punished in the past for selected antics. I also believe he is actually a very smart-with-the-puck hockey player, who plays with consistent effort, and to the maximum of his abilities and skills, and those skills and abilities have grown substantially since he entered the league. I can't say that last sentence about more than a couple Sabres over the past handful of years.
As for the Richards incident, I can't believe Richards attempted the play he did with the balance / positioning he had. He looked like me on skates. No excuse for Kaleta's love-pat, but that's a total non-call if Richards had any semblance of balance during that play.