I was thinking about how the Redskins want to replace Jason Campbell and I thought that there is somewhat of a trend happening in the NFL .
I hate pulling the race card and usually despise people who do so, but is there less patience for black quarterback  in the NFL?
think of this:

The Jaguars are thinking of replacing David Garrard after a season where he got no help or protection. 

Byron Leftwich showed promise but he got injured and no team wanted to take a chance on him until the desperate Bucs took a chance on him

Daunte Culpepper had some of the best statistical seasons by a quarterback in history, the Vikings got rid of him and they've been awful at QB ever since.

Vince Young had a good rookie season and won games plus but they still replaced him and he doesn't look to be in the future of the franchise for the time being.

 Jason Campbell

Donovan McNabb.. As much as I despise the guy, he's a winner and a big time player.  The Eagles would be stupid to let him go.

Tarvaris Jackson shouldn't have started in the first place but he was just as good as Joey Harrington or Rex Grossman but he started for less time.

I'm not saying this is anything definite but i'm saying that this is a strange pattern.. Rebuttals?