activate "sabotage". It can look like this: comes every 4 days like "gang wars". When the event is in town you have 2 choices you can go for: gang sabotage or solo sabotage (like solo attack or gang attack). If you go for gang attack, the gang with the most power wins the fight and he gets to choose, as reward, 1 real hour to block the opponent gang to do robs (example: you can set the block, for the looser gang, from 16.00 to 20.00). The block will work like gang wars: the leader and the trusted members can't do robs for that specified amount of time. For solo sabotage, the fight can be only between players from the same country: whoever wins the fight can stop production of the buildings and whores for the looser for 1 thecrims day.