His concerns include animal rights, species extinction, human overpopulation, ecological crisis, biotechnology, liberation politics, terrorism, mass media and culture, globalization, and capitalist domination.

Reflections on the Liberation of Animals (2004), which has a foreword by Ward Churchill, and the companion volume on revolutionary environmentalism, Igniting a Revolution: Voices in Defense of the Earth (2006).

[5] Best has also written on subjects relating to popular culture, including articles on the film RoboCop and Hip hop music.

[8] He writes: In bold contrast to the limitations of the animal advocacy movement (AAM) and all other reformist causes, Takis Fotopoulos advances a broad view of human dynamics and social institutions, their impact on the earth, and the resulting consequences for society itself.

[2] Best has criticized others in the animal-rights movement who embrace a "fundamentalist pacifism" and oppose any kind of militant direct action, which could include such tactics as "illegal raids, rescues, and sabotage attacks.

Whereas partisans on both sides want to read the history of moral progress as driven exclusively by nonviolence or violence, the fact is that social change unfolds through the entire arsenal of pressure tactics, which include strikes, protests, demonstrations, boycotts, sabotage, liberation, education, legislation or even armed struggle.

[14] In 2005, Best planned to attend a rally to celebrate the closure—as a result of protests from the animal rights movement—of Newchurch Farm, where guinea pigs were being bred for research purposes.

Charles Clarke, the British Home Secretary, said he would rely on new Home Office rules preventing people from enter the UK if they "foment, justify or glorify terrorist violence in further of particular beliefs; seek to provoke others to terrorist acts; foment other serious criminal activity or seek to provoke others to serious criminal acts.

Under the list, people who write, speak, run a website, or use their positions as teachers to express views that "foment, justify, or glorify violence in furtherance of particular beliefs" will be banned or deported.