A 45-year-old parolee, described by his mother as angry at left-wing politicians, opened fire on California Highway Patrol officers on an Oakland freeway early Sunday and was hit by return fire while wearing body armor, authorities said.

...

[The shooter], who had been a carpenter and a cabinetmaker before his imprisonment, was angry about his unemployment and about "what's happening to our country."

[He] watched the news on television and was upset by "the way Congress was railroading through all these left-wing agenda items," his mother said.