A young African-American man , wearing a colorful silk-screened shirt and a cap , walks his bicycle down an urban sidewalk .
There is a better than even chance that a man is pushing his bicycle because bikes are not allowed on this street .
It is impossible that a man is pushing his bicycle because bikes are not allowed on this street .
There is a better than even chance that a man is pushing his bicycle because bikes are not allowed on this street .
A man is pushing his bicycle because bikes are not allowed on this street .