https://www.voanews.com/a/un-accuses-turkey-massive-destruct...

http://www.dw.com/en/unprecedented-destruction-of-kurdish-ci...

https://www.theguardian.com/cities/2016/feb/09/destruction-s...

On the executions: References 56, 57, 58, 59: https://en.wikipedia.org/wiki/Kurdish%E2%80%93Turkish_confli...

There's way more, these are just the top google search results on each of these claims.