The US and some other countries have printed a lot of money to get the economy going again. I do not consider this to be true Keynesianism. Printing money curbs inflation.
Instead, the government should borrow money to boost the economy. In addition, the borrowed money should be invested in public works such as infrastructure or schools to ensure that employees can start consuming again and speed up or reduce the decline in the economic wheels. Still, US money printing has not been entirely without effect. I remember a number but I couldn't find it that said Obama's money printing may have created three million jobs. It's not a damn shame.