Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
You can use this work for any purpose, as long as it is not primarily intended for or directed to commercial advantage or monetary compensation. You should also provide attribution to the original work, source and licence. Read more about this licence.
Credit
Silhouettes of people with hearts walking representing an advertisement for the AIDS Walk for Life in Edmonton Canada, Sunday Oct 4 1992. Colour lithograph after Keith Haring. Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). Source: Wellcome Collection.