So many verses being taken out of context here and that is just as sad as not understanding that the origin of Easter is, in fact Christian, and nothing to do with a Pagan holiday. A quick internet search debunks that prevailing myth very quickly.
Turning the other cheek does not mean that Christians are supposed to, ignore, allow or condone being disrespected. It actually means the opposite.
Judge not lest ye be judged does not mean Christians shouldn't judge. It is actually Christian duty to judge righteously and correct error so that others are not led into or fall into sin.
They know not what they do is in reference, specifically, to those killing the Messiah. It has nothing to do with the general population of believers and how they are supposed to view others.
These are just some of the verses I've seen taken out of context and quoted by atheists, non believers etc as a means and ways to try to judge and correct Christians thoughts and behaviours.
The internet is our friend regarding bible verses, as far as understanding context if someone is a non believer but actually reading the Bible before quoting it would make for much more educated discussion. In addition, there is a reason that Christians have priests and pastors. Reading the bible doesn't allow context where there is bias or ignorance about history. There are phrases that are rich with context and not to be used in isolation.
Also, it's okay to reach out to a Christian for assistance who will, if you are with good intent, clarify teachings and verses and reasons for tradition etc.
Happy Easter all.
(Edited for spelling mistakes - may not have caught them all!)