Injun Joe's death brings out a lot of emotions for people, but the reader is left guessing most of them. The fact that citizens and villagers all around the area flock in, families and all, means that it has a great impact. After all, Injun Joe was a mysterious and terrible force in their lives: an evil quite extraordinary for a small town.

From that "flocking" we can determine that there is a desperate, fundamental need for people to witness something with their own eyes, especially something they've been afraid of for a long time. It's the reason why people visit places where extraordinary things have happened, and also how traumatic life events are often dealt with in therapy—by going back and confronting the trigger to see that it is no longer dangerous. People go in droves to see Injun Joe buried to confirm for themselves that the man who has so disturbed their peace is truly dead. One can also suppose that there was a significant measure of satisfaction. As Twain points out that many of them were hoping to see the man hanged instead, there probably aren't too many tears to be shed.

But there are some. How true or sincere they are is up to the readers to decide, but some people the author calls "sappy women" start a petition for the governor to pardon Injun Joe and spare his life. Twain and Tom both feel that this is done more for their own good than Injun Joe's—to ease their consciences before God by attempting to save someone they know would never be saved.

In general, Injun Joe's funeral is an "event" in the truest sense of the word: a happening that roused up the community, bringing them together in a whirlpool of emotion—most of it relief and shock.

Through Tom's eyes we see another emotion:

His pity was moved, but nevertheless he felt an abounding sense of relief and security, now [...]

His prevailing emotion is also relief at being free of Joe's shadow, but he does consider the gruesome death as well. Looking at the way the killer is found right near the sealed exit, with signs of him trying to find a way out until he gives up and starves to death incites pity in Tom. We can consider this to be a more authentic display of sadness and compassion than those of the "sappy women." Tom definitely isn't about to regret the killer's death, however, for Injun Joe faced a hanging anyway and for good reason; but it shows Tom's capability for empathy. He knows he might have ended up the same if he hadn't gotten out of the cave and that is a grim end to imagine.

Twain doesn't tell us how the people felt about Injun Joe's death, but he does tell us that many people came to be a part of the funeral. People treated it almost as if it were a festive event. In chapter 33, Twain tells that

people flocked there in boats and wagons from the towns and from all the farms and hamlets for seven miles around; they brought their children, and all sorts of provisions, and confessed that they had had almost as satisfactory a time at the funeral as they could have had at the hanging.

Obviously, people were not sorry to see him go!