In the wake of last week's mass shooting teenagers are becoming outspoken advocates for change. In these rallies driven by students the advocates demand a better future for their peers. Bustle's Senior Political Correspondent Erin Delmore explains what makes this movement different than others.

"They have Twitter, they have Facebook, they have petitions on and they are using that to shout at the top of their lungs what their priorities are," says Delmore.

Delmore says the factors that make this movement different is that these students are driven by fear of shooting on their own campuses, coupled with access and the proliferation of social media.