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From left to right: Brandon (brother), Aunt, Brian Cole Jr. Post is from 2017 but the comments are from 2019.
His Facebook profile offers early insight into his worldview:
Your son is likely under investigation already by the @FBI among many other law enforcement agencies so both the community of Christians and Jews are desperately calling on you to have an intervention with your son ASAP before his calls to "greater resistance and escalation" to millions of followers lead to more Christians and Jews being gunned down in the streets, since that appears to be exactly what he is calling for.

His personally email is associated with this eBay account that has feedback from a vendor that appears to sell Muslim prayer rugs that have celebratory imagery of 9-11. Sources: