Illegal drugs are considered to be a serious problem in both the US and the UK. Drugs like heroin, cocaine are often described as hard drugs. Hard drugs cause a lot of crime because their users become very dependent on them and constantly need money to buy more drugs. Drugs like cannabis, ecstasy, and LSD are often described as soft drugs because many young people believe that they are not seriously harmful. But they are mistaken. To have such drugs be considered to be a crime.