First, I have not the slightest concern about politicizing science. Science has long ago been politicized. It was politicized when elected representatives, from school board members to United States Senators, denied the reality of global warming (climate change, if you prefer), biological evolution, the deleterious effects of pollution, the urgent need for everyone to be vaccinated, and the need for conservation of our natural resources. Science was politicized when Scopes was convicted of teaching evolution, when Oppenheimer was denied his security clearance, and when the Trump administration decided to delete certain EPA webpages (later rescinded).
Robert S. Young (presumably no relation to me) proclaimed in the New York Times that a scientists’ march is a bad idea. He bases his thinking largely on an anecdote: He once co-authored a report warning that sea level might rise by 39 inches (1 meter) by the end of the century. Real estate and other interests attacked the report, and the legislature passed a law that prohibited any planning based on an anticipated rise in sea level. Professor Young’s conclusion is that neither the people in general nor the legislators in particular had ever met a scientist, so scientists should go out and