The prophet Isaiah exhorts us against malicious speech which revels in the evil in the world and tears people down. Instead, we should mourn evil and seek God's help in making it better.
Based on Isaiah 58:9b-14:
Thus says the Lord:
If you remove the yoke from among you,
the pointing of the finger, the speaking of evil,
if you offer your food to the hungry
and satisfy the needs of the afflicted,
then your light shall rise in the darkness
and your gloom be like the noonday.
The Lord will guide you continually,
and satisfy your needs in parched places,
and make your bones strong;
and you shall be like a watered garden,
like a spring of water,
whose waters never fail.
Your ancient ruins shall be rebuilt;
you shall raise up the foundations of many generations;
you shall be called the repairer of the breach,
the restorer of streets to live in.
If you refrain from trampling the sabbath,
from pursuing your own interests on my holy day;
if you call the sabbath a delight
and the holy day of the Lord honourable;
if you honour it, not going your own ways,
serving your own interests, or pursuing your own affairs;
then you shall take delight in the Lord,
and I will make you ride upon the heights of the earth;
I will feed you with the heritage of your ancestor Jacob,
for the mouth of the Lord has spoken.
(New Revised Standard Version Bible: Anglicized Edition, copyright © 1989, 1995 National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved worldwide. http://nrsvbibles.org)