I understand your message, which is well done in senryu (which describes human nature . . . whereas haiku describes nature). I think your word choices convey the intensity of your main point (oppression) and this is done mostly in a cerebral way. This presents the mental idea of oppression. These Japanese poetic forms are most well known for their sensory aspects, so I feel this message could also be presented in a way that helps us feel, smell, taste, hear the way oppression can be for some, by using more sensory descriptive words. Not that this poem needs to be changed, but just info for future writing.
I would say it's only the weaker who get suppressed. Wouldn't be possible the other way round.. As for cruelty - it's always unjust, that is why it is cruelty..
Nice short, thought provoking piece.
I am caught in a time spiral of confusion; that period we all experience between birth and death.
Somewhere inside hides a poet, writer, lyricist and/or whatever, laying dormant and suppressed by s.. more..