BERKELEY (CBS SF) — What a teacher did during her off-time is leading to a security scare at a Berkeley middle school.

Over the weekend, Yvette Felarca, a teacher at Martin Luther King Jr. Middle School, took part in a counter-protest against a neo-Nazi group at the California capitol building.

It turned violent, with several people wounded.

Then yesterday morning, the middle school received an email, demanding that Felarca step down or that children will be hurt at the playground.

Felarca spoke to KPIX 5 by phone about the issue.

“Nazis can’t show up on the states capital, stab a bunch of people and then be able to intimidate and dictate who does or doesn’t teach in the Berkeley public schools or in any school district,” Felarca said.

As a precaution, the Berkeley Unified School District moved two summer camps that were taking place at the school and police are increasing patrols throughout the district.