Mark Wallinger’s stunning video work, Threshold to the Kingdom, was at the prestigious Whitechapel Gallery when I was recently in London. It was part of a group exhibition called Life is More Important Than Art (that’s why Art is Important). The show was striking, to say the least. In it, artists of various disciplines (video, film, installation, painting) addressed the theme of hope and loss in a post-Covid world. Wallinger’s video was in the last room. It wasn’t the first time I’d seen it.