They're hoping Congress will vote on gun bills that are currently in committee.
Some of those bills include one on universal background checks and another that limits high-risk individuals from buying guns.
A Chicago mother in Washington says it doesn't matter who you are, no one is immune from gun violence.
"This universal background check is a start. We need healing you guys, and it's a global thing. It's beyond an epidemic. This is genocide in America," said Sandra Robinson, whose son was killed by gun violence.
The Chicago families were also joined by families who lost children in the Newtown, Connecticut school shooting.