Is it ever okay to refuse to salute (or sing or pledge) to the U.S. flag?

Little children, keep yourselves from idols. ~ 1 John 5:21 Is it ever okay to refuse to salute the U.S. flag? Is it ever okay to refuse to sing the U.S. national anthem? Is it ever okay, or maybe even proper, to refuse to take pledges of loyalty to the indivisible power of whatever State rules […]