ST LOUIS, MO - OCTOBER 09:  An audience member asks a question during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election.  (Photo by Chip Somodevilla/Getty Images)

An audience member asks a question during the town hall debate at Washington University on October 9, 2016, in St Louis, Missouri.

Photo: Chip Somodevilla/Getty Images

This debate was formatted to try to include questions from voters, but viewers on Twitter are upset about important issues that were passed by. A roundup:

Immigration

Black Lives Matter

Climate change

Native Americans and the Dakota Access Pipeline

Palestine

Whistleblowers

Native Americans, LGBTQ, BLM, the environment

“Anything real”