Lol, it really isn't that bad as long as you don't go in the suburbs. You wont get mugged downtown. Detroit is getting a lot better though. We have three sport stadiums, two casinos, a new entertainment district with another stadium coming, and a new harbor town. This could be good or bad. The government is intent on spending as much money on tourist facilities (Michigan is by far the most beautiful state imho), but I think some of that money should go back to the people.
The real blame for the conditions in Detroit are the police. The average responce time is 30-20 minutes, which is the highest in the nation. The voters are pretty stupid. They voted a mobster into office, and always denied to vote for the better man based on skin color. (First white mayor since the 60's)
Honestly, I think problems in Detroit stem 100% from the people. They're dumb@$$ education has them making terrible collective decisions. The only smart people in Detroit are those who move there for work, which is mostly at Ford or GM headquarters.