Yes, I understand that only the people involved in an arrest would have recollection of it.<p>But that is just the point. A database differs in degree from personal memories (it follows you around), but it is not different in the sense raised by a statement like <i>That seems directly opposed to the presumption of innocence.</i> (a second interaction could be colored by an officer&#x27;s memory just the way an interaction could be colored by an entry in the database).