If you do decide to picket or protest at or near a Kingdom Hall remember the rules that apply to most communities:
If a Kingdom Hall is on a public street, you can picket on the public sidewalk - but you can not block or hinder traffic going in or out. Protest is exercising your freedom of speech. Blocking driveways or roadways is a violation of traffic laws and not protected..
Most newer Kingdom Halls (quick-builds) have parking wrapping around the main building. To get very close to the entrance of the building would involve trespass. If you go onto the parking lot, even though the public is invited, you are trespassing if your intent is to disrupt the meeting or to discourage anyone from attending. To avoid possible arrest, you must stay on clearly public areas. JWs WILL report trespass and also accuse you of disorderly conduct. They can not do this if you stay on the public sidewalk or along the curbs.
Some communities require groups of five or more to get a police "parade permit." This is usually just formality to inform the police that you will be there demonstrating and not creating a nuisance. The permits will sometimes limit the hours that you can demonstrate so as not to disturb the peace and tranquilty of a neighborhood. Many communities will not charge you for the permit.
Some communities limit protests to the "business hours" of a company or church or public gathering. In other words, if you are a union striking a Walmart, then you can protest only during the business/operating hours of that particular store. For a church or community meetings in residential neighborhoods, you would be limited to the hours when meetings were actually being held. So you'd need to wait until an elder showed up and unlocked the doors before you could start and then you'd have to stop when they locked the doors after the meetings.
Laws vary by communities, so if you do intend to follow koolaid-man's suggestion to picket or protest on Memorial night, be sure to check with your local police department first just to make sure that you are aware of the local laws. Your signs can say anything you want and you can pass out flyers that say whatever you want them to say - but you can't trespass, block traffic, or create a public nuisance.
Used to be a reserve deputy sheriff and had to deal with these things all the time.
JV