Context: On 17 April 2015, The Sun's columnist Katie Hopkins called migrants to Britain "cockroaches" and "feral humans" and said they were "spreading like the norovirus". Her remarks were condemned by the United Nations High Commission for Human Rights. In a statement released on 24 April 2015, High Commissioner Zeid Ra'ad Al Hussein stated that Hopkins' used "language very similar to that employed by Rwanda's Kangura newspaper and Radio Mille Collines during the run up to the 1994 genocide", and noted that both media organizations were subsequently convicted by an international tribunal of public incitement to commit genocide.

Question: Which Sun columnist made controversial remarks about migrants to Britain in April 2015?
Answer: Katie Hopkins

Question: What terms did Katie Hopkins use to describe migrants to Britain?
Answer: "cockroaches" and "feral humans" and said they were "spreading like the norovirus"

Question: Which organization sharply rebuked Hopkins' comments?
Answer: the United Nations High Commission for Human Rights

Question: Who was the High Commissioner of the United Nations High Commission for Human Rights?
Answer: Zeid Ra'ad Al Hussein

Question: What did Hussein compare Hopkins' remarks to?
Answer: that employed by Rwanda's Kangura newspaper and Radio Mille Collines during the run up to the 1994 genocide