Horvat is regarded as one of the "central figures of the new left in post-Yugoslavia". In Germany he published the book After the End of History: From the Arab Spring to the Occupy Movement (Laika Verlag, 2013), where he is engaged in debates and interviews about Occupy Wall Street, Chinese capitalism, poststructuralism and postcolonialism with different thinkers such as Francis Fukuyama, Stephane Hessel, Terry Eagleton, Gayatri Spivak, etc. In his work with Igor Štiks he has been advocating "direct democracy as a necessary corrective (and possibly a true alternative) to electoral democracy and partitocracy" and, more recently, he is claiming that "it is becoming more and more clear that a movement without a party is impotent, and that a party without a movement can only repeat the failures of the past".