In Jainism, no community is labeled as “full of anger.”

What we say is:

• Every soul has the potential for anger (krodh) and other passions.
• Jain dharma teaches us to reduce and finally remove anger, because it is one of the four main kashayas (passions):

- krodh – anger - maan – pride - maya – deceit - lobh – greed ( jainknowledge.com)

Anger is seen as a big enemy of the soul because:

• It destroys peace and forgiveness.
• It leads to himsa (violence) by mind, speech, and body.
• It binds heavy karma and keeps the soul in birth–death. ( jainknowledge.com)

So, an ideal Jain tries to:

• Practice kshama (forgiveness),
• Do samayik, pratikraman, and meditate,
• Control kashayas step by step. ( jainknowledge.com)

If you see some Jains who get angry, it means:

• They are still under the influence of kashayas (like most of us),
• But their own religion is actually teaching them to recognize that anger and overcome it.

You can read more about kashayas and anger here