Wearing your heart on your sleeve

From Roger Ebert:

I invite you to perform four easy thought experiments:

1. You and four friends are in Boston and attend the St. Patrick's Day parade wearing matching Union Jack t-shirts, which of course you have every right to do.

2. You and your pals are in Chicago on Pulaski Day, and wear a t-shirt with a photograph of Joseph Stalin, which is your right.

3. In San Francisco's Chinatown for the parade, your crowd wears t-shirts saying "My granddad was at the Rape of Nanking and all I got was this lousy t-shirt."

4. In Chicago for the Bud Billiken Parade, you and your crowd, back in shape after three hospitalizations, turn up with matching t-shirts sporting the Confederate flag.

...

[Y]ou and your buddies should try wearing the hammer and sickle on the Fourth of July. You could try it at a NASCAR race, for example.