what happens if i call the police on my parents again?

location: california. my parents have an awful relationship with each other and get into huge fights at least once a month for the last 8 years. i've asked a friend to call the police on them once before because i was too afraid to do it myself. someone came and simply told them that they can fight as much as they want as long as it's not in front of the kids. and, of course, they kept doing it in front of the kids. last night i was up until 6am because they were screaming, throwing furniture, etc. my mom has threatened me multiple times not to call the police because i'll get taken away by cps. i don't want that either but i want this to stop and i'm unable to stop it myself. i'd like to add that neither of my parents struggle with alcohol or drug abuse. thank you.