Protestors opposed to the mandatory vaccination bill SB277 rally outside of the Capitol before a Senate hearing on the bill on Tuesday, April 28, 2015 in Sacramento, Calif.
Protestors opposed to the mandatory vaccination bill SB277 rally outside of the Capitol before a Senate hearing on the bill on Tuesday, April 28, 2015 in Sacramento, Calif. Steve Yeater AP
Protestors opposed to the mandatory vaccination bill SB277 rally outside of the Capitol before a Senate hearing on the bill on Tuesday, April 28, 2015 in Sacramento, Calif. Steve Yeater AP