I have no association with the guy, but like many of you I greatly appreciate his continued work on illustrating police violence.
It looks like he's gone to hospital with heart trouble, and since he lives in poverty even by El Salvadorian standards I thought this might be a good opportunity to pass the hat around in support. A visit to hospital and associated medical costs might strain his finances.
He has a patreon attached to his Twitter if you have the capacity to donate a little.
Same