Read this and answer the question. If the question is unanswerable, say "unanswerable".

On October 24, the union Supreme Soviet passed a law eliminating special seats for Communist Party and other official organizations' representatives. On October 26, twenty factories in Lviv held strikes and meetings to protest the police brutality of October 1 and the authorities' unwillingness to prosecute those responsible. From October 26–28, the Zelenyi Svit (Friends of the Earth – Ukraine) environmental association held its founding congress, and on October 27 the Ukrainian Supreme Soviet passed a law eliminating the special status of party and other official organizations.

What were the strikes in protest against?
police brutality