at the Cow Palace in San Francisco.
Not long before he came to San Francisco he had said to the effect that he would run over a long hair should they block his vehicle.
There were more anti-Wallace people than Wallace people at the rally and lots of SF Tact Squad but I did not see any violence that day.
The entire section where I sat was on their feet going "Seig Heil, Seig Heil" and drowning out Wallace's speech. He got off on it.
Here is a snippet I just found from a simple search:
GEORGE WALLACE: Weve got some professors in this part of the country who are today calling for communist victory. And they say thats free speech. But they mean free speech only if you let them speak. They dont want anybody else to speak. And I tell you--
TURNIPSEED: Governor Wallace used to just love to use the long-haired hippie agitators, the, the folks who were out in the front lines of the civil rights movement and the anti-war movement.
GEORGE WALLACE: I love you, too. I sure do. [laughter] Oh, I thought you were a she, youre a he. Oh my goodness.
TURNIPSEED: The folks that he felt like his constituency uh, uh, just really disliked the most, you know.
GEORGE WALLACE: And when he was in California, a group of anarchists lay down in front of his automobile, and threatened his personal safety, the president of the United States! Well, I want to tell you that if you elect me the president and I go to California or I come to Arkansas and some of them lie down in front of my automobile, it will be the last one theyll ever want to lie down in front of.
Demonstrators chant: Wallace is a pig! Wallace is a pig!
Black & white demonstrators: Wallace is a pig, ooh-ah! Wallace is a pig, ooh-ah!
http://www.pbs.org/wgbh/amex/wallace/filmmore/transcript/transcript1.html
Edit to add: Turnipseed was the Executive Director of Wallace's 1968 campaign.