Oh really no treasuries were looted by your "Dharmic" kings.... Look into the history and you will find many such instances... Who can forget the looting of Surat by Shivaji, Singeri temple looting by Marathas etc. The following is for your reference....
Shivaji & the Surat loot: ‘Modi-fied’ historical facts to woo Marathis?
I wouldn't really want to start again over the various Buddhist sites either destroyed or occupied by Hindus as this has been repeated many number of times. But the below pictures will clearly show that "Dharmic" Hindus are also prone to razing or occupying places of worship of non-Hindus..
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And speaking of the second part of your post, well I just stated fact. I keep hearing about this "Dharma" of Hindu Kings right here on PDF, but the real history seems to be completely different... No wonder I call it Drama rather than Dharma...