Twiss to report Cameron, Miliband and Clegg to Metropolitan Police?

In each of these articles the jounalist uses the word “cull” in relation to David Cameron, David Miliband and Nick Clegg

http://toryaardvark.com/2014/07/15/uk-david-cameron-culls-greens-from-government/

http://www.bbc.co.uk/news/uk-politics-29319189

http://www.theguardian.com/politics/2012/sep/03/nick-clegg-ends-agreement-on-mps-cull

Who should be reported to the police: the journalists or the Leaders?