He kind of was. Obama was mentored by Bill Ayers and Bernardine Dohrn, both former leaders of the Weather Underground. Ayers and Dohrn faced no serious consequences for domestic terrorism in the 70s, and were allowed to retreat back academia and political organizing. After their open plans for revolution failed, they turned to accomplishing the same thing through slow and peaceful means. Obama is a political product of this Plan B. When you look at him from this perspective, him and his team were very effective at sneaking a radical leftist agenda under the radar and selling it as centrist politics.
The right mostly went after Obama for his birth certificate, but couldn't make the Weatherman connection stick successfully, because it could be dismissed as this silly, ridiculous red scare stuff. Except just like in the 50s and 60s, it was not ridiculous at all, there really were leftist radicals being enabled by Obama and his people. To be fair, the Republicans didn't try too hard because they were principled losers.
A lot of Obama staffers and Democrat activists came from the same radical leftist circles. Chesa Boudin, AG for California, was born in a Weatherman family, and when his parents were incarcerated for murder, he was adopted by Ayers and Dohrn. Boudin oversaw the release of convicted felons, helped downsize the police, and basically let criminals run rampant. It's a failure when you look at it as a normal person, but as a radical leftist, it was as good as it could get. Boudin eventually got recalled, while Obama mostly accomplished his political objectives. However, Boudin getting disgraced let him retire to academia, where he founded the UCLA's Criminal Law & Justice Center, where he continues his life's work, just like Ayers and Dohrn did.
