Walkouts vary in tenor

  • East chapel Hill students hug as they take part in a student walkout on Wednesday, March 14, 2018, in Chapel Hill, N.C. Students across the country participated in walkouts Wednesday to protest gun violence, one month after a deadly shooting inside a high school in Parkland, Fla. (Bernard Thomas/The Herald-Sun via AP)

  • Hundreds of students walk out of Midwood High School as part of a nationwide protest against gun violence, Wednesday, March 14, 2018, in the Brooklyn borough of New York. It is the nation's biggest demonstration yet of the student activism that has emerged in response to last month's massacre of 17 people at Florida's Marjory Stoneman Douglas High School. (AP Photo/Mark Lennihan)
  • In this photo provided by ninth grader Kirsten Martin, students at Carlton J. Kell High School in Cobb County, Ga., sit in their classroom after they were asked not to leave by staff, Wednesday, March 14, 2018. Young people across the U.S. walked out of school to demand action on gun violence Wednesday in what activists hoped would be the biggest demonstration of student activism yet in response to the previous month’s massacre in Florida. However students at most Cobb County schools were not permitted to leave classrooms. (Kirsten Martin via AP)

  • Students discuss gun violence ahead of a walkout at East Chapel Hill High School on Wednesday, March 14, 2018, in Chapel Hill, N.C. (AP Photo/Jonathan Drew)

  • Freshman Kennedi Lawson, 14, carries a sign as student walkout at Cherry Hill West High School in remembrance of those killed in the Parkland, Fla., shooting in Cherry Hill, N.J., on Wednesday, March 14, 2018. ( David Maialetti /The Philadelphia Inquirer via AP)

Students hoisted “Stand United” signs. They chanted “”Hey, hey, ho, ho - the NRA has got to go” outside the White House. Others put 14 desks and 3 podiums in a circle to honor the students and faculty killed at Marjory Stoneman Douglas High.