We strongly believe everyone should have certain rights, such as the freedom of speech and the freedom of religion, but Athenian civilization functioned differently. Therefore, in present-day’s standards, yes, Socrates was innocent. However, Socrates lived thousands of years ago, under different laws.
The punishment Socrates received was reasonable during his time, conversely, it would not be so in our time. To the audience of his trial, he was guilty of corrupting the their youth’s idea of religion. Termination was the consequence of his crime under Athenian law, therefore his punishment was, at least,