A group of parents and supporters is hoping to shed light on the disappearance of 43 students in Mexico.
The Mexican students vanished last September from Iguala in the state of Guerrero, Mexico.
The Mexican government claims the 43 male students were taken and murdered by gang members or drug cartels. But family members and some human rights groups have questioned those claims and hope the U.S. tour will help put pressure on the Mexican government to tell the truth about what happened to the students.
Director of Chicano/Latino studies at Michigan State University, Shelia Contreras, says the group claims that it was initially police that began firing on the students, and she says a video online seems to confirm that.
"What people are saying is that there was a collusion between police forces and drug cartels," Contreras says.
For the parents in the group, telling their story is painful, but important, and they say the support they have received gives them strength.