Of course you should not take legal advice from a LEO, that's what lawyers are for.
The point I am making, is that most statutes that local law enforcement deal with exist to protect citizens and their property. 99.9% of police officers become officers with the intention of being sheep dogs to enforce the laws that protect the public. The narrative that the police are abusive of power, or inconsiderate of citizens really irks me. Of course some cops join for the wrong reasons and bring a bad name to the profession, but they are the extreme minority.
I don't know much about the case that led up to that Supreme Court decision, but it looks like there was a horrendous breakdown by a combination of the officers, the department SOP, or even the language of the Colorado statute.
I have a problem with blanket statements made against policing as a profession.
Also, I don't know what happened with the police response to the school shooting in Texas. I would like to think that if officers were on the scene, that they would have gone in and taken care of the shooter immediately. I don't know that department's SOP, but if it is anything like most departments (including mine), you enter the building in an active shooter situation even if you are the first officer on the scene with no backup...that is your job and it should be your instinct anyways. If reporting is true regarding the police staying outside, then there is either an issue with those officers, the department SOP, or both.