Explosions of colour, cold war paranoia and hyper-erotic intimacy: five free shows to see

In a new series, we review the best art exhibitions currently showing in commercial galleries, where entrance is freeWalking into Gabriel Orozco’s show is like waking up with a headache and trying to piece together whatever the hell you did last night. Everything in the Mexican conceptualist’s exhibition is splintered, disjointed, a history you can’t make sense of.