Yep, the Weather Underground splintered off from the SDS (who together with the Black Panthers and the Yippies were are the core of the 1968 Chicago riots). The first Weather Underground act was the “days of rage” riots in 1969 during the Chicago 7 trial.
The Weather Underground are labelled a 1960s radical group but CLEARLY their activity (which stretched into the 1980s when they robbed a bank to fund their activities) was primarily in the 1970s. LONG after wee little Obama was “only 8 years old”.
Even the Black Nationalists didn’t like the Weather Underground trying to tie themselves to their movement.
The Black Panthers were Maoist revolutionaries just like the Weather Underground. And the Black Liberation Army carried out several terror attacks and robberies together with the Weather Underground, including the 1983 Brinks Truck job and the bombing of the San Fran police station, which, btw, is still trying to be reopened as evidence is strong that Bill Ayers' wife, Bernardine Dohrn, made and planted the bomb that killed at least one cop and maimed some others, herself.