The question is What sources cited or quoted, and if so, to what effect?

This is the paragraph:
A few months back, while I was giving a workshop on LGBTQIA identities and safety, someone brought up the George Zimmerman trial. In the midst of our discussion, a white participant spoke up and said they didn't understand why we'd be talking about Trayvon Martin when clearly it had nothing to do with LGBTQIA people. When that person was checked by a colleague who very much related to that experience as a queer person of color who is policed in many spaces, the response was not to say, "I'm sorry, I didn't realize I wasn't seeing the broader picture," it was for that first person to break down in tears over being confronted about their privilege. A conversation that ended up being very fruitful regarding the intersections of sexuality/gender/race/etc. had been temporarily derailed because one person couldn't see past their own privilege and the urgency of oppressive violence in the lives of people around them that are impacted by that privilege.

I said The George Zimmerman trial in efforts to other relatable situations people face..

Are you saying there's a quotation from the Zimmerman trial transcript in there? I don't see it.

Also, would you please proofread what you wrote at the beginning? That part (instructions?) reads funny, as if some words are missing.