If the police departments were prohibited from possessing assault rifles, I think that it would be reasonable to deny the right of the public at large to possess assault rifles,
Would disagree with this somewhat. Germany encouraged the Citizens to have guns. They outlawed various subversives,communists and other dregs of society from owning guns which as in America today were mainly jews. And one should look into the religion of holocaustianity deeper to see the nonsensical nature of such claims.