Nevertheless, some thinkers object to the very idea of rights. Marxists have traditionally portrayed rights as an example of bourgeois *ideology, in that they establish a bogus *equality that disguises the workings of the capitalist class system, utilitarians reject rights as nonsense, On the grounds that they constitute unstable philosophical assertions, and conservatives and some communicants have warned that a 'culture of rights' breeds egoism and weakens social norms, an obsession with individual rights being a threat to the idea of what is morally rights.