They also want media coverage and usually notify the media before their protest. Because of the logistics of protests, the most likely targets are shows and fairs in or near larger cities. But groups also know they may get more attention in a rural area. Find out if a particular event has a history of protests. Find out the rules.
Activists have a First Amendment right to freedom of speech so long as they obey the law.
Make sure you know the local rules regarding protests and know both your rights and the protesters' rights. If activists stage a demonstration, make sure you have a single spokesperson to respond on behalf of your group in media interviews. You should have a brief message or statement to deliver. Don't try to 'educate' the media or the public in a protest situation. The best approach is to ignore them.