With $191.367.051.980 in capitalization, is impossible to pump (or dump) artificially Bitcoin. Maybe when price was 50 time less than now, some little pump was possible too. But not now, now with this market volume

You are right but the question is how long will this support last? Will it survive and overcome the selling pressure everyone has got? Whatever happens I am sure that the result would be exciting to see. If it dumped and support has been totally consumed, I am sure everyone would be glad to rebuy back at cheaper price. The same way will happen when it pumps. The only difference is that everyone would be happy because those who have Bitcoin gained profit again.