Credible research suggests that levels of honesty differ across countries:
Gächter, S. and Schulz, J.F., 2016. Intrinsic honesty and the prevalence of rule violations across societies. Nature, 531(7595), pp.496-499.
Hugh-Jones, D., 2016. Honesty, beliefs about honesty, and economic growth in 15 countries. Journal of Economic Behavior & Organization, 127, pp.99-114.
NB: I'm the author of the latter.
This doesn't have to imply racism, there are numerous reasons why people might behave differently in different environments. Different culture, different institutional incentives, a different economic environment....