There are likely more competent people than I on these forums, but I know a thing or two about Derrida.

Derrida is a post-modernist philosopher, whose ideas of deconstructionism focused on analysing reccurent elements within any form of text. The term "deconstructionism" refers to the attempt to show that terminologies and concepts that we often assume to have a certain meaning, have no intrinsic value on and of their own account.