At the Barbican Gallery and the De la Warr Pavilion, two exhibitions focus on the nature of collaboration and the role of creative influence 

At an event hosted by the ICA in London, the whistleblower and activist talked about the dangers of technology and how the US is now ‘like a prison’

At Tate Modern, the artist has installed heat-sensitive paint, tear-inducing gas and renamed the Tate extension in honour of a local activist

Since 1991 the feminist collective has played a key role in nurturing a space for queer activism and sexual and identity politics on film

Five of the best recent artist projects that show alternatives to unsustainable practices

On show at WIELS, Brussels, the artist's textiles are modes of conscious reparation, through which damage and disrepair become precious artefacts

‘You can’t reason with him but you can ridicule him’ – lightweight as it is, Trump Baby is a win for art as a legitimate form of protest

The collaborative practice, led by Helen Walker and Harun Morrison, uses community networks and humour to tackle serious social issues

How do you fit 70 exhibitions, 85 partners, 150 artists, and the contents of more than 48 maps and leaflets into 24 hours?

The agency’s founder talks about warfare in the age of post truth, deconstructing images and holding states and corporations to account

At Jan Mot, Brussels, nine letters written by the artist track the chilling resurgence of Nazism across the globe in recent years

Three current photography shows in London demonstrate how structures of power influence visual culture

Hauser & Wirth Somerset, Bruton, UK

The question at the heart of Manchester Art Gallery’s artwork removal: what are the risks when cultural programming takes up an activist mantle?

La Loge, Brussels, Belgium

From Hannah Black to Not Surprised, the changes demanded by today’s letter writers are still a long way from being assured

Rebecca Solnit and the Not Surprised letter

Maureen Paley, London, UK

Ways of talking about race and appropriation: Claudia Rankine, Hannah Black and Tate Modern’s ‘Black Art, Black Power’ conference

This week's Culture Digest picks up the theme of art and trauma: first up, a new album and film from Nick Cave & The Bad Seeds