For future reference, giving someone permission to withdraw money from your bank is usually a terrible idea. With a credit card you have the ability to charge back errant/unrequested charges (credit card companies are perfectly helpful with this).
Nationwide riots ala Rodney King aren't exactly common, but that doesn't mean riots don't happen. Sports riots (LA NBA Championship, Vancouver Stanley Cup) are almost a perennial event, and then there's the riots that happen at every globalization summit ever.
Multiple monitors don't even have be a major productivity booster to be worthwhile. If an employee's annual cost (salary, benefits, other expenses) is $100,000, an extra monitor is a measly 0.15% more. If that one time expense makes the employee 0.15% more productive the monitor pays for itself multiple times over its lifetime.
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