AUSTIN, Texas (AP) — Police tangled with student demonstrators in Texas and California while new encampments sprouted at Harvard and other colleges as school leaders sought ways to defuse a growing wave of pro-Palestinian protests. At the University of Texas at Austin, dozens of local police and state troopers formed a line to prevent students from marching through the campus Wednesday, eventually clashing with the protesters and detaining multiple people. And at the University of Southern California, police removed several tents, then got into a tugging match with protesters before falling back. The actions across the U.S. came after Columbia University averted another confrontation between students and police earlier in the day.