The police have to follow the law like everybody else. If you have issues with the laws, penalties, or arrests, that's to be taken up with the politicians and courts, not the police officer.
The guy in the school was suspicious. He not only broke the law by taking the gun into the school, but he had an extra magazine which most people don't carry around just for personal protection. The police did the right thing by arresting him. They did their job.
No, you are NOT supposed to follow the law.
You are supposed to do what is right, and laws are supposed to help you do that.
But by understanding what the authority for law is, which is the defense of the rights of others, and by intent of the particular law, you can do what is right instead.
For example, speed limits are to make driving safer normally, but when you have a medical emergency, by understanding the arbitrary and general nature of speed limits, you can drive faster and possibly save a life.
About the only law which does not have circumstances when you should violate the law is the one against rape.
I can't imagine any circumstances when it would be better to commit rape than not.
Laws against firearms near or in schools make no sense at all.
Just like the tradition shotgun over the mantel, schools MUST be armed in order to protect the children they are responsible for.
And I also disagree that an extra magazine is suspicious.
Everyone I know carries an extra magazine at least.
The holsters provide for them because they are desired.
So if some maniac with a CCW walks into a school, kills students your daughter is going to school with, and if she happened to be a victim, you would still believe that it's stupid to disallow guns in school?
Better yet, how do you think the public would react to that? After all, most politicians have people to answer to. Because you can't take all these proactive measures to try and ensure there is no mass shooting by using security guards, metal detectors, locked doors, and then allow anybody with a gun into the building.
If someone wants to stop someone who looks suspicious and check them out, that is fine. But once they check out and there is no longer any reason to be suspicious, then it is wrong to press charges, and in fact the schools should be encouraging parents to volunteer time as armed security on school grounds. The FL school shooting shows you can not trust mercenaries, who can run from trouble when it actually happens. Armed parents would be much better and cheaper.
It will always be stupid to disallow guns in schools. The staff should always have been armed, as they used to be always someone who was armed. Where people got the bizarre notion that making it illegal for honest people to carry guns on school grounds could possibly make things safer, is hard to imagine. It is totally and completely irrational.
You ignored my questions on this:
What if some harm came to your child because the school allowed anybody with a gun to enter the building?
What do you think the media would do if something happened in a school that did allow guns in the building?
What do you think would happen to a police officer that decided not to arrest somebody he was supposed to?
I have no problem with somebody being armed in school. The school is made aware of it well ahead of time. The law permits it. They have the proper training to handle a mass shooting situation. No problem at all.
But we can't let every Tom, Dick and Harry into schools with guns, because that's an open invitation to somebody that does want to commit a mass shooting in a school.
If someone has a child in the school and a valid reason for being there, the school should not stop them.
If they don't have a valid reason, they should be stopped.
Metal detectors and searching everyone is impractical, illegal, and dangerous.
What the media says, I could care less about.
The law NEVER requires the police to ever arrest anyone.
The final discretion, as to things like intent, are entirely up to police.
They NEVER have to arrest anyone.
There are things inherently wrong that no one should ever do, like rape.
But there are also things that normally are right and bizarre laws have made illegal illogically.
Such as the case of NYC laws prohibiting the transportation of a home defense firearm from primary residence to a second home.
Police arresting when the law is not based on an obvious need to protect others, is ILLEGAL, not by statute, but by the basic definition of what CAN be legislated.
Police must be taught that statutes are NOT law.
Law is a higher abstraction that legislation is supposed to try to implement.
But police are supposed to be taught to understand the higher abstraction, and to fix the flaws in legislation on the fly, when the legislation is flawed. And that discretion should always be in favor of leniency, not more strict.