Hurricane Katrina
In one of the most shocking changes in No. 1 in Hot 100 history, rapper Kanye West, who has been in the news this week because of his controversial views on the federal government’s reaction to the relief efforts of 
, received a surge of radio airplay in the pop mainstream radio markets and topped the Billboard Hot 100 for the second time in his career as a performer. 
Controversial rapper dethrones Mariah Carey from No. 1