You intentions might be nobel, but for me there are two issues here:
First off, steem is not a fund-raising platform, votes are to curate posts and the reward is to incentivize the creation of quality content. I see asking people to upvotes for anything despite the content as abusing of the system and therefor think flagging can be justified and it doesn't mean that the user flagging your post is against supporting pour people.
Why not ask people to send you steem, SDB or Bitcoin instead of trying abuse the voting system? (Btw. Votes do cost you limited voting power and are not completely free in that sens)
The other thing is, IMO you shouldn't expect people to just trust you based on a story and a few photos on the internet and then get mad if they don't.