What is the fine-grained topic of the following text: Made between 2012 and 2014, the documentary film buy buy st. pauli shows the creative struggle of the so-called Essohäuser initiative for a group of apartment blocks on the Reeperbahn in the St. Pauli district of Hamburg that is scheduled to be torn down. Only return the topic.
Documentary on the Essohäuser initiative's struggle for apartment blocks in St. Pauli district, Hamburg