The US government and law enforcement have the monopoly on violence and a long bloody history of exercising it against foreigners and people of color, whereas Wal-Mart does not (abuse of employees notwithstanding.) The last President wanted a wall across the southern border with barbed wire, snipers, a moat full of alligators and electrified spikes. You think a government that xenophobic wouldn't also put a gun on a drone? Or that Biden and the Democrats are that different?