School shooting in Connecticut: Celebrities such as Kim Kardashian react on Twitter

9 of 21: Rihanna Tweeted this in response to the deadly Connecticut school shooting on Dec. 14, 2012:

'God have mercy!!!! No one deserves this! Praying for the families of the victims of the Connecticut shooting!! What a Christmas it will be.'

(Pictured: Rihanna talks to OnTheRedCarpet.com at the premiere of 'Battleship' on May 10, 2012.) (OTRC Photo)