"Business secretary Peter Mandelson is slimed by an environmental protestor outside the Royal Society on Carlton House Terrace, Pall Mall after allegations of 'favours for friends' over the Heathrow third runway decision" [Courtesy of "Plane Stupid", via Wikimedia]
They typically source their money from aboard to besiege domestic actors (like honest journalists or independent outlets that document suppressed beats/topics)
I did not envision myself spending several years (even 4 years after leaving that company) challenging the system for tolerating and even covering up corruption