My advice to leaders is to pay attention to the VW scandal and heed its warning. You will most certainly reap what you sow, karma will catch up with you and cultivating fear will always end badly.
So, if there are any “leaders” out there looking to make significant changes in your organization, like an agile transformation, please pay attention. If you want change, you must first remove fear. In its place, install some slack. Give back some time. Allow people to learn. Allow people to reflect. Allow people to change. Allow people to fail gracefully. You want to lead? Give them a reason to follow, something that aligns with their own intrinsic motivation. Stop using motivational junk food. Stop using fear.