Re: Here's the thing...
Do think you guys into the US need to look into why your police need to be so heavily armed
There's a simple reason: Cops in the US must be heavily armed because the population are heavily armed (or at least, are allowed to be, can easily be and often the criminal elements, who they need to deal with, are).
For the rest, I agree that, in general, police officers join the force to help people (or as the US cops say "Protect and Serve"). There is the odd bad apple who joins because they are power-hungry sociopaths with no other route to the power they crave, but I believe they are the exception.
In reality, though, there are some who are corrupted by that power. While in uniform/on duty, the cops should be held to a higher standard than the general population. They should be shining examples of how one should follow the law, among other things.
As a trivial example, my brother was once overtaken by a marked police car exceeding the speed limit (by a large margin, around 40 in a 30 zone) without blues and twos. He accelerated and kept pace with the cop. After a short while, the cop noticed him and slowed to less than the speed limit, encouraging my brother to pass him. Instead, he maintained a safe gap and matched speeds. The cop then proceeded to accelerate and slow down several times to try to force my brother to pass, which he didn't.
Eventually the cop put his lights on and signaled my brother to pull over. "Do you know what speed you were doing?" he asked. "Same speed as you, officer," my brother replied. After a brief argument, including "I'm not sure exactly what speed I was doing, but I was doing the same as you, and as an officer of the law you wouldn't have been breaking the law, would you?" he was issued with a ticket.
Luckily for my brother, we knew a high-ranking officer in the area. He tore up the ticket, gave the cop involved an official warning, and busted him down to beat work. However, both my brother and the officer involved should really have been prosecuted for speeding. In reality, this was another police cover up.
There are many more examples I could cite, but it all comes down to the fact that the police should always be held to a higher standard. They should never be speeding or breaking other traffic laws (except in an emergency, indicated by blues and twos), they should never be corrupt, never violate privacy laws, never violate a suspect's rights etc. They should be whiter than white. When something bad happens, it should not be covered up, but exposed and "cleaned" in public.