doesn't matter, what matter is the intentions. is it destructive
or not. tearing a piece of paper with destructive intentions also
have karma. read...
One instance of intention is one instance of kamma.
When there is kamma there is immediate result. Even just one little
thought, although not particularly important, is nevertheless not
void of consequence. It will be at the least a "tiny speck" of
kamma, added to the stream of conditions which shape mental
activity. With repeated practice, through repeated proliferation by
the mind, or through expression as external activity, the result
becomes stronger in the form of character traits, physical features
or repercussions from external sources.
A destructive intention does not
have to be on a gross level. It may, for example, lead to the
destruction of only a very small thing, such as when we angrily
tear up a piece of paper. Even though that piece of paper has no
importance in itself, the action still has some effect on the
quality of the mind. The effect is very different from tearing up a
piece of paper with a neutral state of mind, such as when throwing
away scrap paper. If there is repeated implementation of such angry
intention, the effects of accumulation will become clearer and
clearer, and may develop to more significant levels.
http://www.buddhanet.net/cmdsg/kamma1.htm#intention
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