greed and the use of power.
look at macdonalds for instance. has a nasty habit of chopping down rain-forests. not a good businnes. but it's allowed. co2 pumping factories that don't care about the environment. bad. selling high fat, high calorie high salt foods to kids with celebrities and cartoon characters. bad.
money used to cripple other countries in subsidies is also bad. money used to prevent the creation of small companies or to put out of business existing ones is also bad. materialism and greed with money where the only thing that matter in live is the size of your bank account and how you show it in a hugely extravagant manner is bad too.
and as i said before it is not the american peple that are "evil" it is the country. thought it does have a few of these "evil" people anyway.