The lead seems a little long and overly detailed given the article's length.
It says he survived an attack by a single rancher in the lead, but the body says "gunmen" plural, with no mention of them being ranchers.
Could you name some specific indigenous rights groups that support the demand of him being buried where he lived?
No images. I know public domain images are scarce for topics like this, but if you can, finding something at least vaguely related to the topic is generally better than nothing.
It should be ranchers/gunmen plural according to the sources, fixed
The source only says "indigenous rights groups", which makes me think it could well just be referring back to dos Santos. I don't think this sentence really adds anything so I've just removed it.
We obviously won't get a free image, but I've tried with one of the few grainy-cam photos of him under fair use. I also added a map.