One of the factions of my setting has several different races cooperating to form a cohesive society. Being relatively modern, it has a variety of amenities we would consider a part of civilisation, like hospitals, banks, and police(For the sake of the question, technology could be considered 1930s era)
This brings me to a question regarding one of the races. Gnolls are more or less to hyenas what humans are chimps, with the exception that they are quite a bit larger, with 6'10 being average across both male and female at a weight of 110-130kg, with certain individuals reaching sizes of up to 8-9ft and 230-70kg270kg. They also have brutally strong jaws (Hyenas can crush bone), and on occasion, sharp claws. My point is, should they feel the need, they can be quite dangerous.
The police force thus encounters something of a conundrum, when apprehending them. Officers attempting to arrest a resisting gnoll find themselves at a distinct disadvantage most of the time, and the result of this can end up oftentimes being rather embarrassing or, should the gnoll be a particularly violent offender, Take an unwantedly brutal turn.
Whilst there are quite a few already, they don't want to hire exclusively gnoll police officers to "even out the playing field", as giving a single race a monopoly on sanctioned violent force is recognised as being, well, not a terrific idea. Conversely, they don't want to rely on brandishing potentially lethal force whenever interacting with gnolls, e.g pulling guns, as only using guns on one species and not the others would give the impression of discrimination, and considerably annoy high ranking gnolls (Gnolls are one of the respected founding races of aforementioned faction, not an oppressed minority, and therefore hold a good deal of sway). Keep in mind that most gnolls aren't particularly inclined to be violent towards authorities, but if one does, it is an altogether more difficult situation than if some 5'8 60kg human does so.
How then, does this societies police force manage to apprehend a consistently larger, stronger citizen, in such a way that they don't appear to be overly brutal?