I am a member of the Federation of Dutch Trade Unions, or FNV, and they are not that progressive. They include the police union and don't make a stand for Palestine. They have made a statement today as a reaction to calls to kick the police union out of the federation. These calls came after police violence against pro-Palestine supporters. The leader of FNV defended the police union in his statement. I think the union has an important place in the fight against capitalism before, during and after the revolution. So when the union is compromised, it means it will be harder for change to happen. I do have hope for the union, but how can you exactly help bring back the revolutionary spirit and ideals?
unfortunately not a lot of easy answers here. if you're not attached to your job you could quit and find a job with a better union, or you could try and rally the support of your fellow workers to get a better position within the union, but that could be very tough
I'm pretty sure it's the biggest trade union in the country unfortunately. This is a common thing in Europe for most of the biggest unions to be reactionary in some way.