Regardless of the many ways Native people suffer, self inflicted or otherwise,  the fact is that the government promised these people housing to replace their houses that were obliterated by the water that resulted from the building of the dam. White folks had their houses replaced; why haven't the homes of Natives been replaced? Just another of the hundreds of promises made to Natives by the government, only to be broken. The second half of the 19th century is a tale of lies, murder, thievery, and sickening slaughter when it comes to the way the government dealt with Natives ( see Bury my Heart at Wounded Knee). The talk of housing started 60 years ago, and those camped out are still waiting. As far as alcohol goes, who gave the Natives alcohol in the first place, and why? It's truly a tale that's disgusting and sickening, but not for the reasons you cite. As far as environmental messes, it seems that the money grubbing greed of folks like Trump is far more to blame...