Donald Trump triggered by polls that showed him trailing behind Joe Biden. Parker Molloy of Media Matters on right wingers and politicians complaining about censorship. Jon Stewart slams lawmakers for not sitting through 9/11 First Responders' benefits hearing. Direct Action Everywhere's Matt Johnson on protestors locking themselves to a slaughter line in an attempt to rescue ducks. 2020 hopeful Julián Castro releases plan to elimiate lead poisoning.