Wednesday on the News Hour, key takeaways from the presidential debate and we fact-check a debunked story repeated by Donald Trump. An Israeli airstrike hits a UN school in Gaza while President Biden speaks out about the death of an American activist in the West Bank. Plus, the role social media is playing in spreading extremism and misinformation in an already divided political landscape. PBS News is supported by - https://www.pbs.org/newshour/about/funders