Laura Loomer criticized Ilhan Omar because of her religious beliefs. Laura Loomer is a member of the Republican Party, specifically the more radical group called alt-right. Ilhan Omar was elected as the representative for Minnesota.
Laura Loomer and the alt-right community feel that immigration of those from other countries into America is a bad thing and will "destroy America". Laura Loomer attacked Ilhan Omar's Muslim religion and said that people of the Muslim faith are oppressing homosexuals and abusing women while forcing them to wear hijabs. Laura Loomer was banned from Twitter after posting these comments which violated Twitters rules against hate speech.