Not that I want to be sarcastic. Everywhere I look at Indian, even in my country (not our local born Indian but India's indian) they are mostly do not have the sense of danger. They do not know what kind of action is dangerous and avoid doing it. They just do and think later if something happened. They never care about anything surrounding them. They (in a group) can just stand in the middle of a walk way and chat as if they are in their own living room and no body else and never consider whether they will block others have walking space or not. If you seen a group of Indians walking in a jogging track, a walking path in the park or pedestrian walkway, regardless of how many people they have, they will walk in a row spreading from the left to the right edge of the track or path as if they are in Bollywood with bomb exploding behind them walking slowly. They simple don't care whether there are other user around them or not. They are always all by them self and nothing else around.
I think the two words you are looking for are ‘naive’ and plain fucking ‘ignorant’.