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> A bulletin was sent by the FBI to law enforcement agencies about Garcia and that "an initial review and triage of the subject's social media accounts revealed hundreds of postings and images to include writings with racially and ethnically motivated violent extremist rhetoric, including neo-Nazi material and material espousing the supremacy of the white race." [0]
Up until that bulletin my news was mostly dominated by criticism of gun policies. Other speculation centered on the dead shooter's tattoos (some were seen in images from the scene), a mugshot of a man with the same name [1], and possible gang/cartel affiliations.
[0] https://www.wfaa.com/article/news/local/allen-texas-outlet-m...
[1] https://apnews.com/article/fact-check-mauricio-garcia-texas-...