An emotional vigil for one student who was killed and the eight who were wounded during the Denver school shooting turned into an angry protest Wednesday night.

The vigil, held at Highlands Ranch High School, which is close to the tragic STEM School Highlands Ranch, was organized by student gun control group Team Enough.

Democrat congressmen Michael Bennet and Jason Crow were invited to speak, while STEM students were invited to attend the vigil - one of two that took place yesterday.

But, as the political speeches wore on, STEM students became frustrated that they had not been allowed to take the microphone and stormed out.

More than 2,000 tearful mourners attended a Wednesday night vigil to honor the victims of a shooting at STEM School Highlands Ranch in a suburb of Denver, Colorado, on Tuesday

A teen sobs into a friend's shoulder during the emotional vigil held one day after the shooting

Teens embraced each other at the event organized by students with the Brady Campaign to Prevent Gun Violence and held at neighboring Highlands Ranch High School

The tone of the vigil shifted dramatically as hundreds of students participated in a walkout

Kendrick Castillo, 18, was shot dead whilst trying to tackle one of the gunmen during Tuesday's shooting. The aspiring electrical engineer had just three days left of school before graduation

The students paraded out of the venue holding up lighted cellphones, chanting 'mental health' and shouting expletives at the media.

They eventually made their way back into the gym where students were allowed to take the microphone and get their message across.

'What has happened at STEM is awful. But it’s not a statistic. We can’t be used as a reason for gun control. We are people not a statement,' one said in footage broadcast by KUSA.

Another added: 'We wanted Kendrick to be mourned. We wanted all of you to join us in that mourning, but that was not allowed here. We all walked out. We were not kicked out.'

Tuesday's shooting was the 11th on an American campus so far this year and the fourth in Colorado since Columbine.

Students stood outside in the rain holding lighted cellphones and chanting: 'mental health'

Colorado State Rep Tom Sullivan, D-Aurora, center, applauds for speakers during the vigil

Sen Michael Bennet (left) and Rep Jason Crow (right) both spoke about gun control at the vigil

Two young women console each other as they gathered to honor slain classmate Kendrick