Grandson of labor icon Cesar Chavez has a warning for America and its voting rights battle

If Cesar Chavez were alive today, he'd be fighting for Latino voters but also African Americans and Asian Americans and members of the LGBTQ community -- anyone marginalized by efforts to curb voting rights and access to the polls, the labor hero's grandson says.

"I feel like it's not a competition," Alejandro Chavez, 43, told CNN. "There's plenty of oppression to go around." As organizers prepared for the multicity March On for Voting Rights on Saturday, the anniversary of 1963's March on Washington, much of the focus has been on the main event in the nation's capital. There, Martin Luther King III will rally demonstrators much like his dad did 58 years prior, when he told a quarter million people on the National Mall, "I have a dream ..."