The creation of a more peaceful and happier society has to begin from the level of the individual, and from there it can expand to one's family, to one's neighborhood, to one's community and so on.
True happiness comes from having a sense of inner peace and contentment, which in turn must be achieved by cultivating altruism, love and compassion, and by eliminating anger, selfishness and greed.
It is important to understand that counterproducti ve actions of body, speech and mind do not arise of their own accord, but spring up in dependence on our motivation. Faulty states of mind give rise to faulty actions. To control negative physical and verbal actions, we need to tame our minds.
We can't blame the entire Muslim society because of the mischievous acts of a few individuals. Therefore, at the general public level we must cultivate the notion of not just one religion, one truth, but pluralism and many truths. We can change the atmosphere, and we can modify certain ways of thinking.