I don’t think you kmow what Green Berets do. Aside from their weapons and tactical training, Green Berets are tasked with working with local populations to win hearts and minds, gather counterinsurgency intel, participate in the defense of local populations, etc. They are the ambassadors of the special forces.
Effective policing shoild involve close relationships with communities. It involves walking beats, talking to people, understanding what the local problems are, and maintaining a friendly, helpful presence. It also means being trained well enough and current enough that you aren’t going to panic-shoot someone when you get in a threatening situation.
What’s happened in the past two decades is that police have been given all kinds of military hardware due to the downsizing of the U.S. military in the 90’s. In the meantime, training budgets have been cut. So you get cops who can’t handle themselves in dangerous, high adrenaline situations. They escalate their behaviour, which escalates the behaviour of the person they are attempting to arrest, and once things start going south someone panics and starts shooting. If the area becomes dangerous, they weapon up with their fancy military hardware, further alienating the population.
Listen to some of the audio on some of those shootings, The officer’s voices give away their panic a lot of the time. You can hear them breathing hard, screaming hoarsely, and in general exhibiting all the symptoms of someone in ‘fight or flight’ panic mode. Then the other person makes a sudden move, and they open fire.
When people are in that mode, they can’t think laterally and make good choices - which is how people can die in a fire because they are blindly pushing on a door they should pull. You don’t want a gun in the hands of someone in that mode. So you need screening and training and testing to make sure you aren’t putting people like that on the street.
Special forces are effective because they are so highly trained that when things get hairy and lesser soldiers lose the ability to fight effectively, the special forces react purposefully and effectively. The only way you get to that point is lots of hard training. That takes more money, not less. And it takes a higher quality of police, which means you may have to pay them more.
Let me give you an example from martial arts. If a normal, untrained person gets hit by someone, they often can’t process what happened, and their brains start gibbering in panic, allowing their assailant to keep hitting them. Martial arts training involves getting hit a lot. You learn to take a punch or shove or other aggressive behaviour in stride, and to counter effectively instead of going into panic mode and shutting down.
The police equivalent is constant tactical training in real-world scenarios, so when it actually happens on the street your training takes over and you respond reasonably and effectively, instead of panicking and shooting.