Hard-hitting works by Weimar iconoclasts, Yoko Ono lends support to Pussy Riot, and Lucy Skaer explores the desire to collect – all in our weekly dispatch
Magic Realism
Otto Dix and George Grosz are among the iconoclasts in this exhibition of the hard-hitting art of Weimar-era Germany.
• Tate Modern, London, until 14 July 2019