Essays / My thesis for an essay on "violence in King Lear" [4]

I'm writing an essay on this topic:

"In great literature, no scene of violence exists for its own sake.

Choose a work of literary merit that confronts the reader or audienc with a scene or scenes of violence. in a well organized essay, explain how rthe scene or scenes contribute to the meaning of the complete work. avoid plot summary."

i have to write this on King Lear, and this is my crappy thesis:

Looking at Cornwall and Regan's cruel beating of Gloucester reveals the theme of having sight without sight, the realization of sin after suffering and the contrast between Regan's inhumanity and Glocester's innocence.

is it okay? any suggestions?
TT