The NFL is always claiming to have the players safety in mind. Now's the time to prove it. Trevathan's hit was brutal, unnecessary and dangerous. Adams was knocked out cold on the play, and Trevathan was somehow able to continue playing. The league needs to correct this, and suspend Trevathan.
It is unfortunate Adams was knocked out, but Trevathan had no ill intent with that hit. The Bears linebacker was trying to make a play. Adams, unfortunately, dropped down to head level and got rocked. This is the NFL. Things like this happen. Fine him, and move on.