This is true as long as a certain number of citizens don't resist with deadly force. The LEO’s will win the fight but getting shot at a couple of times a day definitely degrades morale. This is stark, but if it comes to this Americans are faced with the choice the Jews of eastern Europe were after 1940 or the ‘Kulaks’ had after 1930. People who will round up civilians or engage in food seizure actions are contemptible bullies and they know it and their morale is not that robust. Seeing one of your number get his or her face blown off by a load of 12 gage 00 shot would be definite downer. Having people snipe at you and fire on your vehicles and occasionally fight it out to the death would be very hard to sustain over any length of time. It would also lead to a slow moving but eventual general insurrection. The uniformed bullies leaders often exaggerate how much power they really can wield in a country as big as this one with as much open space as we have.
This from a government that can't even do a decent job of the census every ten years.
It's not a paying proposition, in the long run.
/johnny