During the annual Progressive Netroots Nation conference, protesters stormed the Maricopa County Sheriff’s Office Headquarters to “arrest” Maricopa County Sheriff Joe Arpaio.

The Netroots Nation conference, which is described as being a conference to “amplify progressive voices” and “educate, stimulate and inspire the nation’s next generation of progressive leaders,” took place in at Phoenix, Arizona.

Since Arpaio has been outspoken regarding his beliefs on illegal immigration, protesters took to the streets to “arrest” Arpiao and to show solidarity with illegal immigrants.

Puente Arizona, a “grassroots migrant justice organization,” led the way:

Videos show protesters yelling, “Arrest Arpaio, not the people!”

VID: Arrest Arpaio Not the People chants outside Sheriff's HQ in Phoenix #ArpaioFreeAZ #NN15 pic.twitter.com/HvyJZiUWJ6 — Nancy Mancias (@nancymancias) July 17, 2015

March in Phoenix #AZ for #ArpaioFreeAZ close to 1k in the streets in 100 deg. heat calling for justice #NN15 pic.twitter.com/RDoTNgMKS5 — Lucas Waldron (@lhwaldron) July 17, 2015

Many of the protesters were attending to support an initiative to remove U.S. Immigration and Customs Enforcement officers from Maricopa County Jails to stop them from implementing Arpaio’s “racist” practices.

The Phoenix New Times reports “between 500 and 600” people were part of the march.