The postwar art on show at Tate Britain is moving, but the works by German artists will haunt

Thomas Cole and Ed Ruscha light up the National Gallery with their extraordinary visions of decline

A display of Frida Kahlo’s intimate effects at the V&A is deeply revelatory and riveting

Our often unhappy relationship with animals is cleverly explored at Turner Contemporary

Tate Liverpool pairs an Austrian genius with a little-known American photographer to eye-opening effect

The RA’s magnificent new spaces show that it has finally said goodbye to the old duffers and found a purpose

Basquiat at the Barbican sums up what’s gone wrong with the art world