Where Roelofarendsveen has antisocial youths, Leimuiden has antisocial youth gangs. Usually just breaking their knuckles on each other's faces and vice versa, they did make the news once when threatening some grownup and breaking stuff. Two or three natives worked in the same greenhouse as I did, and one rather boasted of his illegal and fighting activities, though I heard from the other that he ran whenever fights broke out. Personally, I only came in Leimuiden to change buses, either at the bus station (where I heard the quip that everyone in Leimuiden is a bus driver, married to a bus driver or child of a bus driver) or at the stop behind the petrol station just under the arrow that pointed to the right saying "Leimuiden -" of which the dash meant "look no further: you've arrived". I did sometimes miss that stop and allow the bus to take me on a meandering route through Leimuiden ending at the bus station, and can say that it has the looks of a respectable Dutch suburb. People who know no better would want to live there.
Looking into Leimuiden from behind the petrol station, and a small bridge which I once used to dash to the petrol station stop from the bus station.