UPD: Ilya is in coma with no brain activity, but not dead yet. (http://translate.google.com/translate?sl=auto&tl=en&js=n&pre...)
--
Ilya was very vocal about his contempt for falsifications in Russian elections. He went to protests and helped develop an app for election observers. This app helped volunteers submit proofs of violations during the elections.
He adopted several children and hated the recent law forbidding child adoption by USA citizens.
He will be missed by many.
---
Edit 1: Rephrased the first sentence per suggestion in reply
Edit 2: Added recent info about coma