If thing carried were a hand grenade, rather than money, we could say:
1. It's not safe to carry around or
2. It's not safe to carry it around
The slight difference is that #1 means that it (the hand grenade) is not safe to carry - it might explode. #2 means that carrying a hand grenade is not a safe thing to do - it might explode, or you might be arrested by the police..
Money is safe enough to carry (it will not explode), but carrying it may not be safe for you - somebody might steal it.
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