The problem of dirty hands concerns whether political leaders and those in similar positions can ever be justified in committing even gravely immoral actions when "dirtying their hands" in this way is necessary for realizing some important moral or political end, such as the preservation of a community's continued existence or the prevention of imminent societal catastrophe. If political actors can be so justified, a paradox or contradiction seems to emerge because it appears that these actors can, or even must, carry out actions that are, ex hypothesi, morally impermissible. Classic examples of situations in which the problem of dirty hands could arise include ticking time bomb scenarios of the kind popularized by the television series, 24. The problem of dirty hands lies at the point where moral philosophy, political philosophy, and political ethics all intersect.