Two words: Pat Buchanan. (That's a post at the personal blog of Media Matters employee Oliver Willis, who spent hours Twittering his attacks on Buchanan.)
Notice that the Left was OK with Pat being on MSNBC as an anti-war Republican during the Bush years. But now that Buchanan is criticizing Obama . . . eh, not so much.
Buchanan's views about the subjects for which Media Matters now denounces him haven't changed at all. All that has changed is the tactical objectives of the Left, whose No. 1 goal now is to silence all critics of Obama.
The Left has always been more dangerous to its "friends" than to its enemies. Trotsky was a comrade-in-good-standing until he began to became a threat to Stalin's leadership. Try to make friends with the Left, and next thing you know, somebody puts an ice-ax through your skull.
Of course, I'll defend Buchanan against these leftist vermin, but there is a lesson to be learned here, and that lesson is this:
When you're a Jet,No conservative should ever believe that there is anything to be gained by making friends with the Left.
You're a Jet all the way,
From your first cigarette
'Til your last dyin' day.