If Philadelphia is a more convenient demo site than New York City, consider joining the protest planned there on Sunday, Valentine's day.
Participants demonstrating against horse-drawn carriages will meet at the NW corner of 5th and Chestnut Streets at 2 pm for "a peaceful protest" that will end at 5 pm. Those involved will hold signs and distribute flyers (to be provided) to passersby.
Think about spending all or part of those three hours letting people know that horses should not be pulling carriages in 2010 and suggesting to would-be carriage riders that this is a cruel and very UN-romantic thing to do. We're supposed to know better by now -- so have a heart for the horses: come out against horse-drawn carriages.