It wasn't clean but "genocide" against Native Americans, the Welsh, the Irish, the Bretons, and even the deaf (yeas, the deaf) primarily took the form of re-education in order to destroy the identity root and branch, not the
physical extermination of the people.
Have a read:
http://en.wikipedia.org/wiki/Genocide
A deliberate attempt by a collective of mainland European nations to impose a particular idenity upon the British peoples to which their own idenity is then subordinated can be considered an act of cultural genocide. Such an act is, at the very least, sinister, politically motivated and a form of "assult" in the same way as any unwanted intrusion is.
Bookmarks