Mike Nelson / EPA

Terry Pierson / The Press Enterprise

Ringo Chiu / Los Angeles Business Journal / Freelance

Terry Pierson / The Press Enterprise

Mindy Schauer / Orange County Register

Mindy Schauer / Orange County Register

Ringo Chiu / Los Angeles Business Journal / Freelance

Will Lester / Inland Valley Daily Bulletin

Ringo Chiu / Los Angeles Business Journal / Freelance

Mindy Schauer / Orange County Register

Mindy Schauer / Orange County Register

Mindy Schauer / Orange County Register

Mindy Schauer / Orange County Register

Mindy Schauer / Orange County Register

Mindy Schauer / Orange County Register

Mindy Schauer / Orange County Register

Mindy Schauer / Orange County Register

Students from Francis Polytechnic High School walk out their campus for ``#NeverAgain,'' an assembly which spotlights the meaning of school safety for students as part of a nationwide protest against gun violence, Wednesday, March 14, 2018, in Los Angeles.

Students from Francis Polytechnic High School link arms on their football field for ``#NeverAgain,'' an assembly which spotlights the meaning of school safety for students as part of a nationwide protest against gun violence, Wednesday, March 14, 2018, in Los Angeles.

Students from Francis Polytechnic High School hold up signs during ``#NeverAgain,'' an assembly which spotlights the meaning of school safety for students as part of a nationwide protest against gun violence, Wednesday, March 14, 2018, in Los Angeles.

Students from Francis Polytechnic High School hold up signs during ``#NeverAgain,'' an assembly which spotlights the meaning of school safety for students as part of a nationwide protest against gun violence, Wednesday, March 14, 2018, in Los Angeles.

A student from Francis Polytechnic High School holds up a sign during a walkout assembly as part of a nationwide protest against gun violence, Wednesday, March 14, 2018, in Los Angeles, the United States.

A student from Francis Polytechnic High School holds up a sign during ``#NeverAgain,'' an assembly which spotlights the meaning of school safety for students as part of a nationwide protest against gun violence, Wednesday, March 14, 2018, in Los Angeles.

Students from Francis Polytechnic High School link arms on their football field for ``#NeverAgain,'' an assembly which spotlights the meaning of school safety for students as part of a nationwide protest against gun violence, Wednesday, March 14, 2018, in Los Angeles.

Students from Francis Polytechnic High School link arms on their football field for ``#NeverAgain,'' an assembly which spotlights the meaning of school safety for students as part of a nationwide protest against gun violence, Wednesday, March 14, 2018, in Los Angeles.

Students from Francis Polytechnic High School hold up signs during ``#NeverAgain,'' an assembly which spotlights the meaning of school safety for students as part of a nationwide protest against gun violence, Wednesday, March 14, 2018, in Los Angeles.

Students from Francis Polytechnic High School link arms on their football field for ``#NeverAgain,'' an assembly which spotlights the meaning of school safety for students as part of a nationwide protest against gun violence, Wednesday, March 14, 2018, in Los Angeles.

Terry Pierson / The Press Enterprise

Terry Pierson / The Press Enterprise

Terry Pierson / The Press Enterprise

Ringo Chiu / Los Angeles Business Journal / Freelance

Terry Pierson / The Press Enterprise

Mike Nelson / EPA

Mindy Schauer / Orange County Register

Terry Pierson / The Press Enterprise

Ringo Chiu / Los Angeles Business Journal / Freelance

Thomas R. Cordova / Daily Breeze/Press-Telegram

Thomas R. Cordova / Daily Breeze/Press-Telegram

Terry Pierson / The Press Enterprise

Joe Fanaselle / Freelance