[Publius Valerius]

Abortion clinics are private property

And a flag isn't? If I go out to Wal-Mart and buy a flag with my hard-earned paycheck and then burn it on my lawn, seems like it's all private property to me.

You're right; it isn't rocket science: you can't attack people for engaging in speech you don't like. You just can't. End of discussion. It doesn't occur in a civilized society.

[JCEccles]

It's very simple. If you want to buy a flag at Wal-Mart and take it home, cut it up to use it as toilet paper, or burn it, or whatever, have at it. If you buy it to make a public statement of desecration, then be prepared to run a gauntlet by one or more private citizens exercising their right to express their contrary opinion.

After picking yourself up off the ground, dusting yourself off, and locating your teeth, if you want to take your flag and skulk off to an abortion clinic to burn it or go home to desecrate it in private, have at it.