Are all of these police minifigs from LEGO?
As pointed out by others, the first three minifigures are genuine LEGO (with the second having perhaps a few custom accessories). The fourth is not a LEGO minifig. It may include some genuine LEGO elements (legs, hands, etc), but the militaristic accessories are not LEGO elements. This appears to be a custom minifig sold at one time by Modern Brick Warfare.



Not only does LEGO not include guns in their City sets, they also have much better lighting for their minifig photos than this.