Police are not allowed to break the law in order to enforce the law.
Really? Because I seem to recall them doing it pretty much every goddamn day. Then, if lowly peasants like us say anything about it, it's "SUBMIT, MOTHER FUCKER!" and politicians ranting about how you have to give up your freedom to protect freedom and other illogical bullshit.
By the time the Bill of Rights was written, the Founding Fathers had seen the invention of the first machine gun and had personally issues a 22-round "semi-automatic" rifle to Lewis & Clark for their famous expedition. To claim that "they didn't intend for modern weapons" to be covered by the Second Amendment is absurd. They knew exactly where guns were going (which, in all reality, guns haven't changed much in the past century) and they wanted to ensure that the people had the means to fight back against the government.
Also, "Most countries have police that are responsible to the people" is laughable, seeing how the police are only responsible to politicians and routinely violate the rights of "the people" at both the request of their political masters and to satisfy their own desire to feel powerful.
The unthinkable has happened: people have grown up.
Since when is giving up and letting yourself be treated like shit been considered "being a grown up"?