Celebrities React to Orlando Nightclub Shooting

"When does it end?" Josh Groban tweeted.

ByABC News

June 12, 2016, 10:00 AM

 -- Celebrities were sounding off on social media Sunday, reacting to the Orlando nightclub massacre that killed at least 50 people and wounded 53.

As the investigation continues, celebrities sent their condolences and asked their millions of followers to stop the violence.

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Here's who took to social media to share:

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