The officers were investigating a domestic disturbance, which qualifies as an exigent circumstance under California law..
Had they merely walks out an met the officers on their porch nothing would have happened.
Yet the prevented the officers from doing what the law required them to do.
Don't like that law, then get the law changed, and watch more monsters beat their wives while forbidding the police to enter.
The people you elected voted for that law, principally to protect women. If a vote were held today on that issue
it would pass again, easily, because women voters outnumber men, and Ariel Castro has taught us all a lesson
of what an unrestricted right to privacy in your home can bring.