Paul McCartney remembers John Lennon at New York gun control rally: 'One of my best friends was killed by gun violence right around here'
The Beatles star was one of a number of celebrities to march at events across the country
The Beatles star was one of a number of celebrities to march at events across the country
The Republican's constituents include the survivors of last month's shooting at a Florida high school
Exclusive: Letter cautions that failing to enforce rigorous tests may make another disaster more likely
Annual event sees global blackout as environmentalists hope to 'send a powerful message that we must act now' to save planet