You conveniently left out the last part of may sentence you quoted: (omitted part in bold)
Frank Schnittger:

Lefties on the other hand will always slam anyone in power - until they get into power themselves.

which was a deliberate jibe at the historical tendency for some anti-establishment lefties to become even more authoritarian when they achieved power themselves.  So pointing out that some leftwingers can be authoritarian doesn't upset me at all.  In fact I stated that:  Frank Schnittger:

The system of global capitalism we live under - dominated by global corporations - is largely American in origin, ideology, design and control.  

Many people recognise that for all its faults - it is better than the competing systems of Nazism and Stalinism it defeated.

And this is not a generalisation?  poemless:

The election of Obama shows that people with left-leaning ideology are craving strong leadership.

Really?  Obama got rather more than the votes of left leaning ideologists.  Most wanted alternate leadership to McCain/Palin, and authoritarianism in an US context seems to be more characteristic of right wingers - left wingers often being called liberals with good reason.

And yes of course there are lots of generalisations in my diary.  There always are in short pieces.  If I want to write an academic piece I will do so in an academic context, and I won't try to write a history of the recent world in 20 paragraphs.

I'm sorry I didn't get to read your diary.  I meant to and perhaps you present an alternate argument there.  However even if I disagreed with it I promise I wouldn't accuse you of a Hollywood cartoon character level of understanding.  I think it helps to be  bit more careful and respectful in your criticisms.

Vote McCain for war without gain