i think it is more prevalent in the DR than the US...being a person of color (not latin) i see it upfront and personal every time i visit the DR...with certain individuals (some on this forum), i see the KKK all over again...so i really wonder when they see me in the DR, what do they really see, a tourist or someone of color ?
Most people are too concerned with their own problems and obligations that they have little to no time or interest in focusing on you while walking any street in the DR or elsewhere.
In fact, most people may not even notice you since you will simply be one more anonymous person passing by. In the DR a buenos dias or hola maybe as much attention as you will get, which is better than the complete ignorance experienced in many places in the US. At best, in the DR a complete stranger may spring into a conversation with you, but it's all superficial conversation. In any case, at least such person recognize your existence but may simply be looking for way to distract him/herself from his/her problems for a little while by talking about things with someone.
Of course, it become obvious when its time to meet people. Some individuals will avoid you, others will give you a chance. That is typical and normal anywhere. The rest depends on how you act, where you are from, what social status you form a part of, your education level, the way you dress, the way you carry yourself, etc.
There is plenty of room to move, as long as you are not trying to get accepted into the very tight and closed old money upper class social circle of Santiago for example. In that particular circle, if you are not born or marry into it, then you will never be accepted. Very rarely are outsiders accepted.
Dominicans in general don't trust outsiders (the further up the social latter the more distrustful they are), for this reason Dominicans depend heavily on their extended family members for anything they need or want. Whether its finding a job, friendship, business partnerships, etc. On the rare occasion when outsiders are accepted into the social clan, such outsider is only accepted after they have cultivated a sense of trust and friendship which will lead to business relations, contracts, etc. Dominicans don't just meet for business, they first meet to know you and if they like what they see, then after some trust and friendship has developed will they do business with you. In general that is how much of Dominican society works not just in business, but in everything.
This is completely different from the US where people are not completely distrustful of outsiders and this can be seen in the prevailance of social lives revolving around social clubs and institutions more so than what is the case in the DR where life revolves more around the extended family.
Having said all of this, people have too much things on their minds to worry about some anonymous person passing by on some street or drinking in some bar or doing anything that will have little to no impact on their own personal worries and obligations.
Chances are that you will be more concerned of what others are thinking of you than they are actually thinking of you.
You can overcome whatever disadvantages being of such and such race may bring by simply proving to them that you are worthy of their attention and friendship. If you fail to prove to them that, then they will reject you very quickly regardless if you are white, mulatto, black, whatever.
Just my opinion.
-NALs