The risk of petty crime is high and the atmosphere is a little too oppressive for most tourists to feel comfortable walking the streets alone (see page 116).
The risk of petty crime is so high that tourism is very low. 
mnli hypothesis: The risk of petty crime is so high that tourism is very low.  premise: The risk of petty crime is high and the atmosphere is a little too oppressive for most tourists to feel comfortable walking the streets alone (see page 116).