T.R.
You’re assuming the selections are true and that Jews really are taught to abuse Gentiles. They’re not. These ‘Talmudic selections’ are usually compiled and posted on the Internet by people who really hate Jews, and the quotations are either false, deliberately mistranslated or taken out of context. For an example of hoked-up quotes and the real quotes, check out http://www.angelfire.com/mt/talmud/short.html
It’s considered a disgrace before God (Hillul ha-Shem) to treat a non-Jew badly, because it reflects badly on the entire Jewish community.
If you want to get the real Jewish teaching about non-Jews, start with this genuine Talmudic quote: ‘He [Rabbi Ben-Azzai] also used to say: Despise no man and deem nothing impossible; for there is no man but has his day, and there is no thing but has its place.’ (Pirkei Avot 4,3)