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Good Friday morning. It's 4/20, National Weed Day. (Primer for never-stoners.)

Situational awareness: It's the 19th anniversary of the Columbine High School massacre, and school walkouts are expected nationwide.

Chicago readers: Please join me Monday at 10:30 a.m. for a conversation with Mayor Rahm Emanuel about the future of the city and the country. RSVP here.

Thanks for reading. See you all day on Axios.com.