Let us look a bit more macro rather than these single incidents of social politeness however, let us expand a little further. For the sake of the board being mostly brothers from America I will use an example I believe most of you will be familiar with; convenience stores. It is a common trope that most 7/11s within America (known as corner shops in the UK and most European nations, they also fall into this trope) of being ran by non whites, mostly Indians or Arabs. They are usually not far away, easily accessible and offer basic amenities. They are, as the name suggests, convenient. This offers two serious issues however. Firstly, you are supporting the business of someone who has no right being there, some may make feeble arguments saying "well their not all bad" etc but make no mistake, they know and you know the very soil they stand on is not theirs nor should it be. The second is the weakening effect of convenience. It has made us soft, this easy access. One seeking supplies need only walk five to ten minutes to foreign owned shop, buy a subpar item of poor quality then waddle home giddy at his sweet treats and chemical slurry known as an energy drink. This is the pathetic state of modern man, one that should be countered and can be with the most simplest of mindsets; find an independent business owned by a brother and frequent there. Failing to do so due to diversity, simply find a chain ran by a brother European and be picky about what you buy. You tackle two birds with one stone as the adage goes. Firstly, you withhold support for the stranger and if a White European owned business offer support to it and secondly you help shake off the weakening effect of convenience, even if only mildly. 

Indulge me if you will on sharing a fundamental reasoning for this which can be observed by any man who has visited a heavily "diverse" city or location. I was taught from a young age the importance of manners and good form, that is to say pre emptively open a door for a lady politely if you see them coming, hold open the door if there is someone coming through after you generally, address people politely and with respect, never beginning a meal before the host has been seated and so forth. I am no highborn, quite the opposite but I was a keen learner as a child and was taught well. Now when visiting smaller towns with mostly White European populations such manners are met with reciprocation, the elderly lady will thank you and perhaps comment how there aren't many people like you left or the gentlemen behind you will say "cheers pal" as he follows through and shop keepers and pub landlords will always be warm in their dealings with you. As an aside I have always found they at first would be puzzled due to my stature and demeanor but after realising I am not a threat to them they always seem to warm up. Now such a thing is not a uniquely British trait despite our proclivity for being anal in our social interactions, it has always been a common courtesy for most Europeans. If one were to watch 1950's American TV one would witness such things as standard, the social contract between kin being one of reasonable respect, the same goes for every European nation and culture prior to the semetic subversion of our media. Now, if one were to do this in a diversified location and observe if it is returned, well, one finds the nature of the beast is truly revealed. The negro will flounce through nary a word of thanks, the third worlder will ignore your courtesy and remain haughty and vile, simply put despite the concept of the "integrated" individuals among them, by and large these groups simply do not see value in such things and prefer to live as close to barely above bestial as possible akin to their homelands.