FULL LIST: Traffic impact for SF right-wing rallies, counter protests
"So people will come to the park at about 10 a.m., get into the formation and then about 11 a.m., a helicopter will fly overhead and get a great shot.
"I was a slave under the Nazis," said Ben Stern, a Holocaust survivor who had his arm tattooed and most of his family killed at Auschwitz.
VIDEO: Holocaust survivor discusses horrors of Nazi 'slavery' amid national turmoil
FULL INTERVIEW: Holocaust survivor to march in Berkeley protests, here's why
Stern, 95, plans to march in his hometown of Berkeley Sunday to fulfill a promise he made 70 years ago.
"I promised to the people who went to the gas chambers in Auschwitz that I'll speak up for them. I will remember them," he told us.
RELATED: Rallies and demonstrations planned for SF, Berkeley
Berkeley Police Chief Andrew Greenwood told us the approach of his department and the mutual aid forces that are coming in will be to keep things non-violent, if not completely calm.
Click here to learn more about Ben Stern's survival.
Click here for a look back at stories and videos from recent protests.