What is the meaning of [Crows will not pick out crows eyes]

“One belonging to a group having common interests is not likely to act against or find fault with another member of the same group. Solidarity may prevail over law, justice or truth.”,Paczolay, Gyula (1997). “13”. European proverbs; in 55 languages, with equivalents in Arabic, Persian, Sanskrit, Chinese and Japanese. Veszprémi Nyomda. p. 96. ISBN 1-875943-44-7.