What is one solution Bern Belina suggests for the problematic of public space? We should sell tickets to public space We should focus on the process by which capitalist economies produce poor urban populations in the form of a reserve army of labor, and then excludes them from public space We should create separate areas for "undesirables" such as homeless people so that they are not completely excluded from public space We should jail and/or fine anyone who loiters or tries to live or sleep in public spaces