You might want to reconsider.
Psychologists have found that when Americans see the flag, they feel more patriotic for up to two weeks. And these feelings of patriotism singularly help the Republican party, with zero gain for the Democrats.
This being said, you can continue with your boycott except for say, two weeks prior to the next elections. Then there should be American flags everywhere.
Good points. I put several flags up on Vets Day, 4th of July, Memorial Day.