A federal judge on Wednesday temporarily blocked a California law that would have banned carrying firearms in most public places, ruling that it violates the Second Amendment of the U.S. Constitution and deprives people of their ability to defend themselves and their loved ones.

The law signed by Gov. Gavin Newsom in September was set to take effect Jan. 1. It would have prohibited people from carrying concealed guns in 26 places including public parks and playgrounds, churches, banks and zoos. The ban would apply whether the person has a permit to carry a concealed weapon or not. One exception would be for privately owned businesses that put up signs saying people are allowed to bring guns on their premises.