has since been developed by Henry Giroux and others since the 1980s as a praxis-oriented "educational movement, guided by passion and principle, to help students develop a consciousness of freedom, recognize authoritarian tendencies, and connect knowledge to power and the ability to take constructive action". Freire wrote the introduction to his 1988 work, Teachers as Intellectuals: Toward a Critical Pedagogy of Learning. Another leading critical pedagogy theorist who Freire called his "intellectual cousin", Peter McLaren, wrote the foreword. McLaren and Giroux co-edited one book on critical pedagogy and co-authored another in the 1990s. Among its other leading figures in no particular order are bell hooks (Gloria Jean Watkins), Joe L. Kincheloe, Patti Lather, Myles Horton, Antonia Darder, Gloria Ladson-Billings, Peter McLaren, Khen Lampert, Howard Zinn, Donaldo Macedo, Dermeval Saviani, Sandy Grande, Michael Apple, and Stephanie Ledesma. Educationalists including Jonathan Kozol and Parker Palmer are sometimes included in this category. Other critical pedagogues known more for their Anti-schooling, unschooling, or deschooling perspectives include Ivan Illich, John Holt, Ira Shor, John Taylor Gatto, and Matt Hern. Critical pedagogy has several other strands and foundations. Postmodern, anti-racist, feminist, postcolonial, queer, and environmental theories all play a role in further expanding and enriching Freire's original ideas about a critical pedagogy, shifting its main focus on social class to include issues pertaining to religion, military identification, race, gender, sexuality, nationality, ethnicity, and age. Much of the work also draws on anarchism, György Lukács, Wilhelm Reich, postcolonialism, and the discourse theories of Edward Said, Antonio Gramsci, Gilles Deleuze (rhizomatic learning) and Michel Foucault. Radical Teacher is a magazine dedicated to critical pedagogy and issues of interest to critical educators. Many contemporary critical pedagogues have embraced Postmodern, anti-essentialist perspectives of the individual, of language, and of power, "while at the same time retaining the Freirean emphasis on critique, disrupting oppressive regimes of power/knowledge, and social change". Developments and critiques Like critical theory itself, the field of critical pedagogy continues to evolve. Contemporary critical educators, such as bell hooks and Peter McLaren, discuss in their criticisms the influences of many varied concerns, institutions, and social structures, "including globalization, the mass media, and race/spiritual relations", while citing reasons for resisting the possibilities to change. McLaren has developed a social movement based version of critical pedagogy that he calls revolutionary critical pedagogy, emphasizing critical pedagogy as a social movement for the creation of a democratic socialist alternative to capitalism. Curry