Actually, Kagan's thesis on socialism is pretty darned good

As a historian who has read widely in socialist and communist history, and written about the topic, I found her thesis to be academically first rate, based on a wide-ranging use of primary and secondary source material, with a thoughtful analysis and sound conclusions that derive from the evidence…

Her thesis — written from the perspective of an anti-communist scholar who was not in sync with the pro-communist leftism of what by then was a declining New Left — does not reveal that she was an advocate of radical social change. It does reveal an individual who, like the socialists and unionists she was writing about, also wanted to “change America.” It is clear that she found their struggles inspirational and that she empathized with their fight. If she has not changed her views on these issues, it puts her right in the mainstream of what is today’s left-of -center Democratic Party. Her views, however, were far removed from those Obama appointments like the short-lived one of Van Jones, who openly espoused communist and revolutionary ideas, which once exposed, forced him to offer his resignation.

Some may disagree with the political sympathies that led her to write on this topic, but I believe the thesis itself should serve as no grounds to deny her appointment to the Supreme Court.