All too many "conservatives" have assimilated the thought patterns and political instincts of the Left. Among these is labeling any type of nationalist impulse "neo-nazi," any desire to preserve national identity "xenophobia," and any pride in one's culture and people (at least when practiced by Europeans) as "racism."
"National identity" is ethnic and racial.
Nationalist movements have always been the friend of collectivism, and of the "will of the people"/"national will" overriding individual rights.
Patriotism is based on shared values, not shared blood.
Le Pen's opposition to immigration is based primarily on race, the French people's opposition is based more on values.