I think it's funny that in Only Lovers Left Alive, Tilda plays the yang side and Tom the yin, because in real life Tom is definitely yang and I have a feeling Tilda is more yin. Although I think Tilda is just perfectly balanced.
Image - Tilda Swinton with rainbow flag in Moscow's Red Square to protest Russia's archaic antigay laws. This woman reflects the individual vs government theme in that she is protesting the governments law that gay people can not marry.
Tilda Swinton and W Team Up for Incredible Surrealist Editorial