The brokers listing this 2BR/2.5BA Murray Hill co-op apparently thought that the function of the sliding frosted glass partition in the living room was not readily apparent and decided to demonstrate how it's used, in the creepiest way possible. To operate the partition: 1) have a tall shadow man push against it with his flattened palm, 2) call the police.
Also, while we're on the subject of that partitioned off guest room, what are those things all around the top of the wall? Are they lights? They don't look like lights. Are they speakers? Who needs that many speakers in that small an area? Are they cameras? Who needs five cameras in one guest room? Two cameras usually do the trick.