Our prayers should be with Brandon McCarthy. This is a scary situation.
Also, I hope baseball does something to protect catchers from home plate collisions. In football, there are rules designed to protect the quarterback. There are fines for helmut to helmut contact.
Baseball should have rules to protect the players. Runners should not run into fielders, and fielders should not block runners from reaching a base.
Catchers wear equipment designed to protect against foul tips, but not against runners running into them at full speed. There is an unfair advantage to the runner.
Watch the video of Buster Posey's ankle rolling and snapping as he is hit by a no name player and justify that play. It is gruesomely stomach turning.