Um, you do realise that the "fight" occurred at NIGHT-where most of the members would either:
A:Be asleep
B: Be relaxing/chilling out and not kneading chakra.
Trust me, obito and itachi could wipe out any clan in konoha with a sneak attack in the dead of night.
They are 2 kage level shinobi. Of course they wouldn't have a difficult time. There could have been some fireballs but the Anbu knew what was happening and so they kept it silent.
Itachi just killed a few , and his parents , while Obito did the rest .
Um, you do realise that the "fight" occurred at NIGHT-where most of the members would either:
A:Be asleep
B: Be relaxing/chilling out and not kneading chakra.
Trust me, obito and itachi could wipe out any clan in konoha with a sneak attack in the dead of night.
Remember we are talking about ninja and not civilians. The Uchiha were considered among the elite clans in Konoha. They were composed of Konoha's Police Force. There is no way all of them were simply murdered in their sleep unaware.
Also we saw Sasuke coming home late from school. The timing on that is never stated. However I doubt it was past midnight. I don't even think it was past 10pm when Sasuke arrived home.
I was thinking maybe Fugaku had given command for his fellow clan members to not resist and accept their fate. Fugaku had planned a coup and was caught before he could execute it. Maybe one of the reasons he let Itachi kill him without offering resistance; was because he wanted to regain some honor (planning a coup and seeking to insight war against his village and countrymen being dishonorable) by taking the quiet dignified death at the hands of his son.