IIRC, KevDen2005 started doing this around the time that Black Lives Matter, the Obama administration, and many other celebrities and SJWs were attacking LEOs, both verbally and physically. It wasn't a matter of perceiving LEOs as better than any others or their deaths being any more tragic than servicemembers, first responders, reporters, actors, etc. It was a matter that they -- as a segment of society in general -- were under attack and we had a daily toll of people who were dying even as they were doing their their jobs and being attacked for doing so.
One hopes that the SJW lurkers who come by here occasionally will at least note the sheer number dying in the line of duty regularly.