This is what happens when an A-hole (SUV) meets a dumbass (white car).
I lived in Northern Ca for 29 years in a neighborhood that looks identical to what is shown in the LA area. The speed limit in a residential neighborhood like that is 25 MPH, unless otherwise posted. I'd be genuinely surprised if the speed limit is more than that, as cars are allowed to park on both sides and yes, kids run out, and...get this.....cars back out. IMO, the SUV was going too fast. California’s “Basic Speed Law” means that you may never drive faster than is safe for current conditions. Granted, it's a video but having worked in the roadway for over 31 years I have a pretty idea of how fast objects are moving. IDK, I may have lost that touch after being retired for 16 .
Also, CA State Law says you can use your horn for emergencies only. The only reason for urgency was because the SUV was going too fast and I would say the proper thing to do given the circumstances was to brake quickly and adequately and a quick tap on the horn to warn the white car and let them know they failed to yield but being the dickhead that the driver of the SUV was, he sounded it much too long...you've made your point: granted, the white car was careless but YOU are driving much too fast for the conditions. A learning opportunity flew right over their head.
Standby for some hypothetical here: Had there been a collision AND I came to the scene as a cop (I'm not) AND this video had been available to me I would have cited BOTH drivers; the white car for failure to yield / reckless driving and the SUV for speeding...and if the SUV driver showed me some attitude I'd throw in a violation of that statute I mentioned earlier for the excessive horn blowing, disturbing the peace or inciting road rage.