Not familiar with LA, but I see this all too often; asking where squats are. Honestly if you don't know who you're squatting with (and even if you do!), it's best to start your own. Safer, under the radar, and fairly easy to do. Find a house that looks abandoned and google your county's tax or property appraiser website and research the address. "Estate" is best, dead folks can't report trespassing. Next best is out of state owner or bank owned, the most common ones for me. Carefully scope it out without letting neighbors see, find out the best squat key type, and lift that from Home Depot.
The hardest part is getting in unseen. After that, even if cops see you, you're gold because trespassing has to be reported by the property owner. So if they're out of state and don't keep in touch with neighbors (the case with my last one in a busy suburb; stayed there for ~5 months with no hassle going in and out fairly openly), ain't shit gonna happen. Even better if it's listed as "estate", aka deceased owner.
I know that's not what you're looking for but finding a safe squat that's already cracked with strangers usually leads to bad times. Self sufficiency is much better.