This is what happens when you deinstitutionalize the mentally ill...
Said in jest, I know. However, I sit on the board of trustees of an organization that helps the de-institutionalized mentally ill. Some of our "clients" are unusual folk, to be sure, and many of them need to be helped with everyday things like washing and buying their groceries. But none of them would do anything dangerous and stupid.
These Code Pink people are both dangerous and stupid, and they do these things being fully compos mentis and are without excuse.