Lord Setar
THe escort idea, again, sounds like a good one. I could also help by having a little repository in case an anti decides to single me out - I'm prone to anger though, and if I get called "accomplice to murder" I'll probably get very pissed. If I stand out there and just show support for the people going in, half the time I'll likely be grumbling under my breath, and unless I bring friends I'll probably be outnumbered. Of course, if they start putting up little paper signs on streetlights, papering them over will likely be a need.
An escort doesn't just stand there. They escort people inside. You would be next to a woman entering/leaving the building and helping her ignore the protesters. I would definitely not recommend arguing or debating with protesters while you are escorting. Some of the women going in are going to be rather emotional, and they don't need shouting and arguing, no matter what's being said. You'll be asking her what she thinks of the weather, etc. Even when there is no one entering the building, someone may be driving past to get in, and you wouldn't want them to see you bickering just before you offer to walk them in. It's a bad impression.