We talk to two artists of different generations as they open new London shows. Howardena Pindell discusses the use of the circle in her abstract paintings, its origins in segregation in the US and the resistance to her art that she encountered among her peers. And Oscar Murillo reflects on his journey from rural Colombia to the UK, its effect on his multifarious art and why it is only now that he is doing a pure painting show for the first time.
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