The Plain View Project reviewed the posts made by a sample of police officers in eight cities.
Similar behaviour was found in every city sampled, raising concerns about the culture surrounding the police.
Al Jazeera's Kristen Saloomey reports.
Explore how your country voted on global issues since 1946, as the world gears up for the 74th UN General Assembly.
We dialled more than 35,000 random phone numbers to paint an accurate picture of displacement across South Sudan.
Meet the man on a mission to take down Cambodia's timber tycoons and expose a rampant illegal cross-border trade.