Atheists insist their belief is correct even though they have no direct scientific proof. Yet they criticize those who believe in God for having no direct scientific proof. In scientific terms, this is bias. In religious terms, it is pride.
Atheism is a faith and a philosophy just as religion is a faith and a philosophy. Atheists believe in the non-existence of a God even though they have no direct proof. They believe in something they cannot prove, although they have certain evidences that they think support their claim. Those who believe in the existence of God also believe in something they cannot prove, and they have certain evidences they think support their claim. Neither side can directly prove their point or even come anywhere close, so both sides must rely on faith.
Why does this matter? Because atheists as a whole are pushing their faith on to everyone else. They frame atheism as a neutral position, but it is far from neutral. State sponsorship of atheism and secularism is becoming widespread. It's adoption by the state presents the same threat that state sponsorship of any other faith would present: the loss of religious liberty.
Already, those who believe in having prayer in school are denied because of state sponsorship of atheism. Religious monuments in public squares are being removed because of state sponsorship of atheism. Atheists claim they only wish to avoid having religion foisted upon them. But in fact, they are foisting their religion on us.
Fight for religious liberty. Fight against government sponsorship atheism.