Take Action
Call/Tweet Congress

Contact your representatives in Congress and demand that they support common-sense measures to curb gun violence.

The number of the Capitol Hill switchboard is (202) 224-3121 and here's an easy way to tweet to them (even if you don't know your congressperson or you're not on Twitter).
Write/Email Letters.

Write the editors of local and major newspapers (search by zip code), voicing your opinion on background checks, open carry, child safety, or any other gun sense issue.

Tips and talking points
 
Take the pledge.