Why do Obama supporters always tend to blame the inaction and grave blunders on conservatives?

It's pretty easy, even a conservative could figure this out if he had time to get his head out of his a55. The reason the Obama supporters (and most of the country too, BTW,) blame the Republicans is that they have voted en masse against almost every reform that has been brought before congress and by using a record number of filibusters are requiring that almost all legislation require a 2/3 majority. For some reason the Republican party has decided that a democracy should be controlled by a 1/3 minority.