Remember the Alamo (2004)

In the early 1830s Texas was about to explode. Although ruled by Mexico, the region was home to more than 20,000 U.S. settlers agitated by what they saw as restrictive Mexican policies. Mexican officials, concerned with illegal trading and immigration, were prepared to fight hard to keep the province under their control. Caught in the middle were the area's 4,000 Mexican Texans or Tejanos. With war on the horizon, the Tejanos had to pick a side. Many chose to fight with their Anglo neighbors against an army sent by Mexico City. The conflict pitted brother against brother and devastated the community. The Tejano gamble for a more prosperous future in an independent Texas proved tragic. Following the revolution, the Tejanos were overwhelmed by a surge of Anglo immigration -- leaving them foreigners in a land they had fought to defend.

Unfortunately the movie Remember the Alamo is not yet available on HBO Max.