Another point that some posters have touched on is that the image and reputation of the country is tarnished when you have Police raiding tourist venues, checkpoints, roadblocks etc. It scares people and puts people off coming.
It all looks very 'Third-world, Banana Republic, Police State, or dare I say it, Dictatorship' to anyone looking in.
They don't have the tact or common sense to know any better unfortunately.