Russia was playing the popular game: “Let’s you and him fight!”
Here’s a write-up from the Texas Tribune:
"Heart of Texas, a Russian-controlled Facebook group that promoted Texas secession, leaned into an image of the state as a land of guns and barbecue and amassed hundreds of thousands of followers. One of their ads on Facebook announced a noon rally on May 21, 2016 to “Stop Islamification of Texas.”
A separate Russian-sponsored group, United Muslims of America, advertised a “Save Islamic Knowledge” rally for the same place and time.
On that day, protesters organized by the two groups showed up on Travis Street in downtown Houston, a scene that appeared on its face to be a protest and a counterprotest. Interactions between the two groups eventually escalated into confrontation and verbal attacks.