Answer:
The word "bosh" shows that King has taken a serious attitude and believes that love is not a foolish feeling, but genuine, progressive and good.
Step-by-step explanation:
King used the word "bosh" to say that when he says that it is necessary to fight social inequality with love, he is not talking about love as something foolish and confused, but he is talking about love as something genuine and powerful, capable of fighting against hatred of people against the black population. In this speech, King claims that he has already seen a lot of hatred in the countenance of those who do not agree with him, but that hatred is a very heavy feeling and that it hinders the fight for which they are fighting. In this case, they must fill their hearts with love, not make their feelings a burden, but use them in a positive and progressive way.