Mark Hagen 
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Local seminars: Bristol Junior Geometry Seminar. Geometry & Topology Seminar. Algebra Seminar. Some geometry/topology/groups people in Bristol who have websites: Dan Berlyne Charles Cox Viveka Erlandsson David Hume Alice Kerr John Mackay Matthew Tointon Vlad Vankov Signed: September 2022: Call to defend bodily autonomy in the mathematics community (one can sign at the link). May 2021: Just Mathematics Collective statement on collaboration with the NSA. Some signatories had a response (pdf) from the AMS. Letter to AMS Notices responding to the response. June 2020: Boycott of mathematical collaboration with police. 