no, they DON'T have a right to ask you where you are going, that's you're 4th Amendment rights
The other video clearly shows search and seizure that broke his 4th amendment rights. In the other case, he felt he was NOT free to go (as would anyone else in the situation), so it was a seizure.
A seizure is not constituted by merely approaching the individual on the street or in another public place, and asking him if he is willing to answer some questions, or by asking him questions if he seems willing to listen, or by offering in evidence in a criminal prosecution his voluntary answers to such questions. The person approached, however, does not have to answer any questions under these circumstances; he can simply walk away.[15] He may not be detained even momentarily without reasonable, objective grounds for doing so; and his refusal to listen or answer does not, without more, furnish those grounds.[16]
A person is seized within the meaning of the Fourth Amendment only when by means of physical force or show of authority his freedom of movement is restrained, and in the circumstances surrounding the incident, a reasonable person would believe that he was not free to leave.[17] If the police are questioning someone, and they remain free to disregard the questions and walk away, there has been no intrusion upon the person's liberty or privacy, and for Fourth Amendment purposes--there has been no seizure.[17]
The other video clearly shows search and seizure that broke his 4th amendment rights. In the other case, he felt he was NOT free to go (as would anyone else in the situation), so it was a seizure.