It's a protest with a purpose, not to mention a good deal of planning, as Boston prepares to host its own March for Our Lives Saturday.
"There's always troublemakers. I hope they stay home tomorrow because this is all about a positive message," said Boston Police Commissioner William Evans.
The march steps off at 11 a.m. from Madison Park High School, makes its way down Columbus Avenue and concludes with a rally on the Boston Common.
"We coordinated with Boston Police a few weeks ago and told them the route we'll be marching on," said organizer Rebecca Munoz. "There will be a police presence."
Boston Mayor Marty Walsh says the city has been working to make sure all the necessary security measures are in place.
"We're going to work with [organizers] to make sure they have a safe day tomorrow," Walsh said.
To keep people safe, Boston Police say officers will be in uniform and undercover. Streets and intersections will be closed as well.
Estimates of the crowd 20,000 to 70,000 people. Clarisa Brooks of Spellman College in Atlanta will be one of them.
"I think it's important that students have a voice," she remarked.
Boston Police are asking people to leave their backpacks at home as well as the sticks for their signs.