The Establishment in France has for decades accommodated Islamists, but this has modestly changed in recent months, especially after the beheading of Samuel Paty last October. Has public opinion changed about Islamism? Survey research only goes so far because of concerns about being called an "Islamophobe." Applying data science to anonymous French tweets reveals a persistent anger that, if suitably channeled, could lead to a profound shift in policy. Can secularism make a comeback?