On “LA Times Today,” the crisis at the southern border is fueling extremism as vigilante citizen patrols move into the fray.

Plus, a Los Angeles Times documentary shows the Colorado River being pushed toward collapse.

Also, still more water warnings — a look at what 40 years of climate change has done to our spring snowpack.

And finally, UCLA gymnastics — after tumbling to new lows, the Bruins once again have title aspirations.