G.E.G.Catlin, in his 'Science and Method of Politics' (1927) advanced the case for a 'value-free' pure science. He treated 'power' as essence of politics and argued that analysis of 'power' should not be inclined in favour of any particular value-system.  I think,  in today scenario, money and muscle power and 'value- free' work culture have developed in the fields of politics.