AFAIK certain mutilation cases, and Colares etc are documented.
i'm pretty sure the only person going on about human mutilation is Witkowski and his faked credentials took his credibility and threw it all in the trash.
as for COLARES: this is a totally fascinating string of investigation. i remembered a little about Confrontations and went back and did a reread of Lethal Impact as suggested by uforadio above. i also explored other documentation and reports around the Colares incident specifically, which is a real kettle of fish to be certain. here are the salient features that i took from some reading this morning:
- there's definitely an ongoing phenomenon in out of the way regions in Brazil called the Chupa (sucker - as in people claim that their blood is being sucked out by the light, and then after this they are 'ruined' or that their blood sample is being 'sent to the Americans'). part of this phenomenon includes strange ships of various sizes, descriptions and lights sending out beams of light that induce paralysis at the site, nausea, disorientation, some vomiting etc.; sometimes puncture marks are associated with the beams of light - sometimes one puncture, other times two holes
- these cases have been reported in an ongoing manner for so long that they have moved into the territory of mythos and remind me a lot of both Vampire stories and the Chupacabra tales, where rural folk experience unique, possibly prosaic, events and then lodge these as part of the Chupa mythos of UFO's with paralyzing light beams.
- the primary doctor involved as the source for documenting the light wounds, health effects and even two deaths has a lot of problems with her story. she's only 22 years old at the time of documenting these events (some say 24 but either way i don't see how you can become a doctor at 22 and be able to confirm what's taking place); the number of patients cited go from 4, to 35 (Vallee) to 40, 80 and then one source says over 100 patients were seen by her; these incidents took place in 1977, but only in 1993 does she make the claim that two people died from these events that she personally drove in her car to a hospital and then received death certificates for. i find her testimony to be problematic.
- Vallee's sources in the Lethal Impact chapter rely heavily on independent locals who are conducting their own off the cuff investigations and many of these are retold stories with very few incidents getting documented on paper, no photos, no proper primary source interviews etc. In one instance Vallee cites a rumoured story told by a young boy of a whole African village being burned near Narobi but there is nothing to substantiate it beyond his story.
- Vallee himself identifies that gastroenteritis is one of the leading causes of death in the country and light beam victims display similar symptoms
- the deaths that Vallee cites are not about UFO's being malevolent but most often are about people doing things themselves related to UFO's i.e. wanting to commune with higher beings and taking bizarre substances or even starving themselves in the woods and dying from dehydration because they wanted so desperately to be a contactee
So what I took from this read was that Vallee himself is not always so academic, but is also a collector of enough "stories" with enough minor confirmations of his "Confrontations" to make you scratch your head. Certainly the light beams seem to be fascinating enough and consistent enough that in 1977 a lot of various agencies descended on the region to investigate, yet there is only one photo i found online that showed a puncture mark? For such a supposedly well documented incident there is little proof and a lot of confabulation that has taken place decades later. Two puncture marks sounds like snake to me, others sounded like lightening, could be spiders - i'm not sure, but these remote region tales definitely point to the impact of folklore and mythology on an uneducated, populous that may already have tendencies towards supernatural explanations for prosaic events. At least that's what the witness accounts sound like.
At the same time, the great number of reports of people getting hit by beams of light, specifically beams that penetrated structures and homes to hit people, is highly curious and worthy of critical thought. If we are to take the health effects as accurate (none of which died - at least not with any proof of the beam as the cause) it is suspicious, as the entire Colares event, from another perspective, looks very much like the equivalent of biologists tagging animal specimens in the wild.
I would count the Colares event as an example of ET displaying indifference to our plight, not maliciousness, in the same way that biologists in the field worry more about their own skin than the animal's.
p.s. Confrontations is on slideshare along with a great number of UFO classics:
Jacques Vallee - Confrontations - A Scientist's Search for Alien Co...