Electric power is the most efficient form of energy form that can be transported from one place to another. However, it can be dangerous. Current in whatever form (either AC or DC is fatal for us). But at which they become dangerous, and for same voltage levels which one is dangerous.
AC current can be fatal at a lower voltage level of 10 mA, whilst DC is bearable at voltage level as high as 40 mA. The reason is that AC causes severe muscular contractions and simulates sweats. Given below is a video proof which illustrates this: