This will not end well.https://www.theguardian.com/society/2018/jan/11/trans-women-should-be-considered-for-all-women-shortlists-labour-dawn-butler …
The worst has already happened. FTM Transgender fighters were given the go-ahead to cagefight in women's MMA leagues. One trans-fighter, Fallon Fox, ended up giving a woman concussion. http://www.cagepotato.com/after-being-tkod-by-fallon-fox-tamikka-brents-says-transgender-fighters-in-mma-just-isnt-fair/ …