Did you read them? Das Kapital or the Capital in the XX-First century

http://online.wsj.com/news/articles/SB10001424052702303825604579515452952131592?mod=Opinion_newsreel_2

http://www.ft.com/intl/cms/s/2/0c6e9302-c3e2-11e3-a8e0-00144feabdc0.html#axzz2zJmtEByw

http://www.dissentmagazine.org/article/kapital-for-the-twenty-first-century

http://www.powerlineblog.com/archives/2014/04/the-rich-are-everywhere.php

And a very balanced view from G Mankiw
http://gregmankiw.blogspot.fr/2014/04/first-thoughts-on-piketty.html