Ignoring the "danger" or perceived danger, you may want to take a look at any of the recent G series cameras. RAW, small, good controls, less obtrusive than a DSLR. In fact to the untrained eye, a G camera looks like a really old point and shoot since it doesn't look like a modern sleek small camera. Shooting travel with my G-9 tends to attract much less attention than my 7D, and thus producing more natural shots if people are walking past.