NBC Nightly News Broadcast (Full) – November 20th, 2020 | NBC Nightly News

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Donald Trump Jr. tests positive for Covid-19, police respond to shooting at Wisconsin mall, and Pfizer applies for emergency use authorization for its Covid-19 vaccine.

Watch “NBC Nightly News With Lester Holt” at 6:30 p.m. ET / 5:30 p.m. CT…