The effect of prejudice aimed at some ethnic/religious minority group(s) is that eventually the same means to go after the ethnic/religious targets of prejudice are used on those who are part of the lawful majority too.
The prejudiced (in the employ of the government or not) and the (witting or unwitting) tools (in the employ of government or not) of the prejudiced might start going after "them"/"the other"; however the tools used to serve such prejudices have not been, are not, and will not be, limited to the ethnic/religious minorities that are the primary target of the tolerated bigotry.
This outcome is what happens when there is xenophobia and official growing tolerance for intolerance directed at some ethnic/religious minority group(s). Eventually that which is defended in the name of going after some "despised" (generally lawful) demographic group will be also used mostly on those who are not part of the initially targeted group. It's in play when it comes to dealing with DHS-CBP, and it's in play when it comes to dealing with DHS-TSA. Eventually they come after more and more and more. If you think you will be spared, you may end up being sadly mistaken ... with nothing but tin ears to hear your complaints ... if you can even complain without threat of retaliation.
After they go after the "foreign", they eventually go after the natural born citizens .... even those not perceived to be of the "despised" ethnic/religious demographic group(s). Keep in mind that those on a power trip don't spare you their hand -- rather they may hit your "resistance"/groin to subjugate you and bring you to your knees as they wish.