The poem is short, but it packs in a bitter joke. It opens like a news broadcast: "and we in other news," as if a presenter is shifting to the next story. Then comes the flat, shocking line, "have voted to suffer." Putting a collective decision to hurt ourselves into the tone of routine reporting is what makes it unsettling. The title, "Self-harm," suggests the "we" here is a whole community or society, harming itself by choice, and barely noticing.
The second stanza turns to a warning. People who "believe in the sun too long" end up as ash. The sun usually means warmth and hope, but here too much faith in it burns. Judging by the imagery, it may point to blind belief, or to ignoring the damage while we keep trusting something that is destroying us.
The speaker sounds numb and darkly ironic rather than angry. The mood is cold, quietly alarmed, and uneasy.