15 of 21:
Blake Shelton, a country star and a coach on NBC's 'The Voice,' Tweeted this about the Connecticut school shooting on Dec. 14, 2012:
'The killing of defenseless people and innocent children. I'm sad and sickened. This is why we all should be prepared to defend and guard. Stand strong and stand united everyone... We are Americans and we are better than this. What a sad sad disgusting day this is...'
(Pictured: Blake Shelton appears backstage at the 2012 CMA Awards in Nashville on Nov. 1, 2012.)
(Country Music Association)