Today marks the 12th anniversary of the 9/11 attacks. Just like individuals from any profession, many members of the rock + metal community are paying their respects to all who were affected by the tragedies that struck New York City, the Pentagon and United Airlines Flight 93.

Bands such as Guns N' Roses, KISS, Motorhead and Papa Roach along with musicians like Bret Michaels and X Japan's Yoshiki have all taken to Twitter in remembrance of a day that we'll never forget.