Using government funds

Is it permissible to utilize government funds (especially in such a country were Hindus are rulers and where unislamic laws are enforced) where the meat of a pig is not considered haraam. Where alcoholic substances are sold without any ban. Where Muslims are treated as downtrodden and ignorant. In such a country where all means of earning are against the principles of Islam, can we use goverment funds for construction of toilets and bathrooms in the premises of a masjid (mosque) only meant for making wudhu etc. These things can be used only during prayer times because they remain locked almost all the times and people cannot use the all the time.