The first American governor of New Mexico, Charles Bent, was beaten, murdered and mutilated in his Taos home in front of his family on January 19, 1847. The assassins were from the nearby pueblo but their action was part of a larger insurrection by Mexicans and Indians against the American conquest. Several other Americans were killed.
If you’ve been to Taos Pueblo, you’ve seen the ruins of San Jeronimo church. To capture the insurgents taking refuge inside, the U.S. Army destroyed the church with fire and artillery on February 4, 1847. An estimated 150 Indians were killed in that and the subsequent pursuit, and several more were tried and hanged as ringleaders. (The father of one of the American victims presided over the trial.)
All part of that “peaceful” conquest of New Mexico we learned about.