I've been so good staying out of this one... I've really been patting myself on the back.

Unfortunately it couldn't last forever.
The person who threw the four was just an anti-fur woman. That's it.
She isn't PETA, she doesn't represent PETA and she wasn't doing it on PETA's behalf. She never even mentioned PETA. For the record, PETA has an official stance on throwing things (like paint) on fur wearers and that is they absolutely do not endorse it as an organization.
Having said that, I thought it was funny as hell.
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"If you have men who will exclude any of God’s creatures from the shelter of compassion and pity, you will have men who will deal likewise with their fellow men." — St. Francis of Assisi, 1181-1226