If the security forces continue to be dominated as they are now by political groups or sects, then the people won't trust in them - and the result will be civil war or fragmentation of the country.
When young we have a vivid sense of basic values like trust and warm-heartedness, which we tend to neglect in today's competitive world as we grow up, yet from birth we all have a need for affection. The emotions we experience today have not changed much over the last few thousand years, but the interest increasing numbers of people are showing in their inner world and how their emotions work is a sign of maturity.
To have faith is to trust yourself to the water. When you swim you don't grab hold of the water, because if you do you will sink and drown. Instead you relax, and float.
National security laws must protect national security. But they must also protect the public trust and preserve the ability of an informed electorate to hold its government to account.