Atheism is DANGEROUS because if u dont understand and acknowledge the presence of Lord then chaos would prevail. If there is no God then there is no reason for controlling your senses. There is no reason for not eating meat or having sex. Atheism leads to indiscipline and the Lord WILL punish you by making you a Shudra.
Buddha propagated atheism because at that time there was lot of animal killing the name of God.
In the current society, atheism will never work. Infact it is extremely dangerous.