should i call a police

today morning during breakfast with my brother andrew, opposite shop got a man that force and pull a women that holding a baby into the new empty shop. Starting with a pulling action than pushing, i have no idea what i going ? but if this type of this happen again i think i will go there and ask it is need help ???

because i have no idea how can a man that punch a women ? end up the man knee down and look like begging the women. What he want man >?? confusing @.@

so what if this happen to you ??