
A Speakers' Corner is an area where open-air public speaking, debate, and discussion are allowed. The original and most noted is in the north-east corner of Hyde Park in London, England. Speakers here may talk on any subject, as long as the police consider their speeches lawful, although this right is not restricted to Speakers' Corner only. Contrary to popular belief, there is no immunity from the law, nor are any subjects proscribed, but in practice the police intervene only when they receive a complaint. Speakers' Corner is often held up to demonstrate freedom of speech, as anyone can turn up unannounced and talk on almost any subject, although always at the risk of being heckled by regulars.

Atheism is, in the broadest sense, the absence of belief in the existence of deities. Less broadly, atheism is the rejection of belief that any deities exist. In an even narrower sense, atheism is specifically the position that there are no deities. Atheism is contrasted with theism, which, in its most general form, is the belief that at least one deity exists.

Allah is the Arabic word for God in Abrahamic religions. In the English language, the word generally refers to God in Islam. The word is thought to be derived by contraction from al-ilah, which means 'the god', and is related to El and Elah, the Hebrew and Aramaic words for God. The word Allah has been used by Arabic people of different religions since pre-Islamic times. More specifically, it has been used as a term for God by Muslims (both Arab and non-Arab) and Arab Christians.