District Attorney George Gascón is reminding potential demonstrators that California is a concealed carry state. That means people may not carry a firearm in public unless they have a valid carry concealed weapon license.
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Officials say people who break that law will be prosecuted.
"We have a big challenge ahead of us next week with what happened last week and what some people are calling for for the inauguration," said Chief Danial Hahn. "They're not just in DC but all over our country. It is very much a potential here and we are doing everything we can to ensure that doesn't happen."
RELATED: No public access to US Capitol on Inauguration day, as FBI warns of armed protests in all 50 states
The FBI has set up command posts to help.
The CHP says it has officers ready to respond if state property needs to be protected.
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