What do you think the New York Journal is hoping to accomplish by describing this as a shameful treachery?

for sensationalism.

Explanation:

The New York Journal was established in the year 1895 by William Randolph Hearst and has its headquarter in New York City, New York in the United States of America.

The New York Journal is the product of the combination of two companies that is New York American(Morning Journal) and Evening Journal.

The New York Journal describe some things as a shameful treachery and hoping to catch people's emotion.

It is believed that many of the publications of New York Journal was used to catch people's emotion before and during the Spanish-American War(1898)

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.