Zakat seems the opposite of Interest. Where interest takes more money on capital loans from the needy, Zakat takes an amount from wealth and gives it to the needy. It reverses what interest does and reverses the bad effects of Capitalism and inequality.
Zakat is also a prime example of countering the 1% and 99% phenomenon. Income equality exists in capitalism based countries where 1% of the people have more and most money. While 99% or the rest of people have a huge gap and less money. The Occupy Wall Street movement is a prime example of the less privileged 99% people expressing frustration at the 1% wealth concentration.
At ConceptPaper.org we feel Zakat is a prime example of an anti-capitalism activity to reduce inequality. We feel the effects of capitalism should be countered via bringing a solid Zakat system.