S4 E25: Forensic Science, Puerto Rico & Tax Reform: Last Week Tonight with John Oliver

Season 4, Episode 25. October 1st, 2017. John Oliver discusses why forensic science used in criminal trials can be surprisingly unscientific, Donald Trump reacts to the hurricane in Puerto Rico, and we fact-check Trump's claims about tax reform. Connect with Last Week Tonight online... Subscribe to the Last Week Tonight YouTube channel for more almost news as it almost happens: www.youtube.com/lastweektonight Find Last Week Tonight on Facebook like your mom would: www.facebook.com/lastweektonight Follow us on Twitter for news about jokes and jokes about news: www.twitter.com/lastweektonight Visit our official site for all that other stuff at once: www.hbo.com/lastweektonight