From 1825 the increase of anti-Polish policies became more visible and intense. Prussian political circles demanded end to tolerance of Polishness. Among the Poles two groups emerged, one still hoping for respect of separate status of the Duchy and insisting on working with Prussian authorities hoping that in time they would grant some freedoms. The other faction still hoped for independence of Poland. As consequence many Polish activists were imprisoned. A joint operation of Russian and Prussian secret police managed to discover Polish organizations working in Breslau "(Wrocław)" and Berlin, whose members were arrested and detained in Prussian jails.