Some scholars have suggested that Haredi Judaism is a reaction to societal changes, including emancipation, the "Haskalah" movement derived from the Enlightenment, acculturation, secularization, religious reform in all its forms from mild to extreme, the rise of the Jewish national movements, etc. In contrast to Modern Orthodox Judaism, followers of Haredi Judaism are usually uncompromising in their adherence to Jewish Law and custom, and, as a result, they segregate themselves from other parts of society to an extent. However, many Haredi communities encourage their young people to get a professional degree or establish a business. Furthermore, some Haredi groups, like Chabad-Lubavitch, encourage outreach to less-observant and unaffiliated Jews, as well as to non-Jews. Thus, professional and social relationships often form between Haredi and non-Haredi Jews, as well as between Haredi Jews and non-Jews.