Read the Gripping Note a Sandy Hook Mom Wrote to Orlando Surivors

There's a common thread that unites a diverse group of Americans, but it is a thread they wish was never unspooled. The friends and family members of the victims of mass shootings in the US is a relatively small group, but it's one where members can easily find comfort in each other.

Nelba Márquez-Greene never expected to be a spokesperson for the group, but following the death of her 6-year-old daughter, Ana Grace, at the Sandy Hook Elementary School mass shooting on Dec. 14, 2012, she became just that. The touching Facebook page she launched in memory of her daughter is filled with poignant posts about motherhood, gun violence, and support for surviving family members. But following the Orlando massacre over the weekend, she wrote a particularly mournful post that is touching parents everywhere.

"How do I tell my son that fifty people all died the way his sister did? And in one of our favorite places: Orlando, Florida," Nelba wrote. "I am waiting for the church to be as outraged about gun violence as much as we seem to be about who pees where in a Target bathroom."

She goes on to share a message with the newest members of the club no parent wants to join:

Nelba also shared a number of organizations that citizens can get involved with to help prevent future gun violence in America before signing off with more powerful words:

Read on to see Nelba's complete post, and find more information about the attack here.