Because one of the symbols is an Indian peace pipe.

And you are supporting someone who falsely claimed to be Indian, and who used that false claim in the most cynical ways in her career.

Every one of her claims to actual ancestry has been proven false.  Every one of them, including the family lore.

You should be ashamed of yourselves, if you have any shame.

So take the Tolerance stickers off your cars.  You don’t serve to wear them.

Update:  A reader points out that the “r” also is an Indian symbol, via the link above:

under the letter “r,” a joyful Native American kokopelli [fertility deity], dancing and playing the flute, is used;