A bunch of Somalis settled in Minneapolis; and that picture shows housing projects. I'm rather sure the Riverside housing projects are where a great many of the Somalis settled and it can be so isolated in the cold of winter, that radical recruiters could move in and try to recruit them into namely Al Shabaab, the terrorist organization back in Somalia.
Some say, Christian organizations (ELCA, Catholic Charities) trying to do good, helped settle these refugees, that is not the total truth though, I'm sure the government, Federal, State and Local played their part as well.
So, Ellison is elected to a small district where from what I gather, many of the Muslim Somalis live.