Does silence regarding the sale of subsidized flour and buying it out of dire need, with knowledge of its source, constitute participation in sin or make the buyer sinful?

If flour is subsidized for its manufacturing and sale to citizens, then it is not permissible for bakery owners to sell it raw, nor is it permissible for those who are aware of their situation to buy it from them, based on the Almighty's saying: "And cooperate in righteousness and piety, but do not cooperate in sin and aggression." The responsible authorities must be informed, and their actions denounced. However, if the responsible authorities do not care and denunciation is ineffective, and the sale of flour is happening regardless, and you are in need of buying it, then we hope there is no blame upon you.