There needs to be something done about billionaires using charities for tax evasion. Bill Gates for example gets tax breaks by donating money to his own charity. This charity is then used to hoard wealth, invest in stocks and to make tax free transactions. Gates isn't the only one doing this and pretty much every international organization is prone to corruption from these people who use their wealth to get NGOs and media organizations to push agendas that make them more money. There literally needs to be a limit on how much wealth one person can have, because it inevitably leads to corruption and tyranny (eg. almost every war the last 70 years was started because of bribery).