Here.
It was the hubris and political animus of a single high-level FBI functionary, Peter Strzok, which sought to stymie the political will of the American people who elected Trump by presenting a phony dossier as credible evidence to a FISA court in order to surveil a presidential candidate.
The whole thing is reminiscent of nothing so much as the Lois Lerner affair, when one person in The Swamp used her position to curtail the free-speech rights of The Tea Party during the 2010 revolt against Obamacare and government bailouts of all and sundry except the taxpayers.