You don't need to know Russian to understand a commentary, the picture is worth a thousand words.
Насрал под дверью, позвонил и убежал — это инсталляция. Если сначала позвонить в дверь, а потом насрать на порог — это перформанс.
Translation: If you took a dump at the door, then rang the bell and ran away--this is installation. If you rang the bell and then took the dump on the threshold--this is performance.
I think Fischer's idea was to do an installation, because for a performance, even very sophisticated Moscow has enough people with baseball bats and good fighting skills, that Fischer may not have survived a performance. So, let's call that pile of shit an installation. But, of course, nothing is new under the Sun. One immediately recalls a genius Danish cartoonist Herluf Bidstrup who already in 1950s saw what was coming. He was a communist, you know--the old school one, a real deal.