Why do Keynesian prefer fiscal policy to monetary policy?

Keynesians prefer fiscal policy over monetary policy because they believe that during economic downturns, government spending can directly stimulate demand and create jobs more effectively than monetary policy, which can be less impactful in a liquidity trap. They argue that fiscal measures, such as increased public spending or tax cuts, can provide immediate relief and boost aggregate demand, while monetary policy often operates with delays and may not reach consumers effectively. Additionally, Keynesians emphasize the importance of addressing unemployment and underutilized resources, which they believe fiscal policy can target more directly.