The aftermath of a disaster is often a complex time when competing interests can pit public safety agencies against their own citizens. The government, concerned about the immediate safety of its citizens, places restrictions on reentry to damaged areas. But people are more worried on about their future livelihood and often see these restrictions as detrimental.
On February 14th, Mount Kelud on Java Island in Indonesia erupted, throwing debris 12 miles into the atmosphere, displacing over 100,000 people, and killing four. Aside from the immediate impacts, the eruption also brought the risk of future landslides as rains wash the debris down river beds that pass through many of the villages. For this reason, the government has banned residents from returning to their homes if they live within 6 miles of the volcano. But the residents aren't listening.
Their reasons are many. For farmers, there is the need to return and tend crops and livestock or risk losing their livelihood. But for others, the eruption represents a windfall of sorts. The building industry pays well for volcanic ash and debris as it can be used to make a particularly strong cement. People who earn their living supplying sand to building companies can make almost twice as much for the volcanic ash as they do for regular sand. Given the potential profits, evading security patrols is just a cost of doing business.
The lesson here is that while safety is always a priority, responders must be able to accommodate people who have a need to reenter a restricted area. You cannot just dismiss concerns over economic survival - people are entitled to a level of understanding on the part of their government. Limited, controlled access is always safer than chasing trespassers.