Of course not!
But that is exactly what most of us actually do in our everyday lives. Without even being aware of it, we are supporting our "enemies".
Consider this: you buy a product or service from AAA Products. AAA Products is owned by a person who gives a lot of his income to certain causes that you may be strongly opposed to (terrorists, for example). In effect, by purchasing your products from AAA Products, you are helping to fund a cause that you are against. You are "providing aid and comfort to the enemy".
If we, as individuals, do not keep abreast of who supports what, then we have no room to complain if the "wrong" agenda becomes the law of the land.
So, here are a few that you may want to look closely at - these businesses contribute strongly to very liberal causes, either in money, or in their efforts, or both. If you are in favor of such left-wing causes, you will want to support these businesses. And if you oppose the left wing agenda, you may want to avoid giving your money to these businesses. Pay for the weapon that will defend you, but do not pay for the weapon that will be used against you! The choice is yours - and you should be aware that you are making such a choice.
Known for supporting very liberal causes (small sample):
Ben & Jerry's Ice Cream
Rolling Stone magazine
New York Times
Los Angeles Times
University of Colorado
It's difficult to locate businesses that so actively support a conservative agenda, but there are some, such as the Family Defense Fund. I wish I could post more, but it seems that, because they are in the minority, liberals are more outspoken, and tend to pursue their agenda more aggressively. By their very nature, conservatives are, well, conservative! They tend to let things shake out on their own, so there are not as many businesses that pursue the right wing agenda.
But the point remains: each of us has an obligation to support those who support our beliefs, and to deny support for those who do not, regardless of which "side" they are on.