"a new pair of shoes" is the object of the preposition because it answers the question 'what did Wilmer buy?"
This is a matter of perception. Evil inflicted for no justifiable reason is in itself evil. However, murder is evil yet in certain circumstances, one can be forced to act in an evil manner, without choice, especially when protecting yourself or a loved one
Because he was going to force people to go to church and them not have a choice.
