Mexico City ( CNN ) -- Delia Garcia traveled hundreds of miles to spend Mother 's Day marching in Mexico 's capital . It is her latest stop in the search for her son , who went missing more than two years ago after he was kidnapped by a group who drove up in trucks to the doors of her house in the northern city of Torreon . `` That day , they took my son 's life and they took mine . They took half my life , because this half , I am using to search for him , '' Garcia said . She was among a group of mothers and other family members marching in Mexico City on Thursday , Mother 's Day in Mexico and several other Latin American countries . Holding signs with pictures of their missing sons and daughters , they said they came with the hope of being heard . But they said they were also tired of waiting , claiming that the authorities have not done enough to find the thousands of people who have disappeared as a brutal drug war embroils the nation . `` The first few days I lived with fear . I lived with a lot of fear , but seeing that they were not doing anything , I decided to make my signs and go out and look for him , and let people know that I am searching for my son , '' said Irma Alicia , whose said her son disappeared in Mexico 's capital on March 23 . Alicia said she was still waiting for answers . Vanishing victims : The 'open wounds ' of Mexico 's drug war . Others told similar stories . Jose Antonio Torres said communication was even more difficult for his family ; many of them are deaf , including five people who went missing while selling calendars in the state of Coahuila on February 23 . `` The authorities do n't give any response . They do n't give information , and there is a lack of communication between the authorities and people with disabilities . There are not translators in the government offices , '' he said . Without information , they have searched on their own , finding whatever details they can about the cases . `` They were at an intersection in Piedras Negras , and we know that a black truck with armed and masked gunmen took them , '' Torres said . `` They were simply working in the street , on a public road . '' Such stories are becoming increasingly common throughout the country , where government statistics indicate more than 47,000 people have died in drug-related violence since President Felipe Calderon declared a crackdown on cartels in December 2006 . According to Mexico 's National Human Rights Commission , more than 5,300 people have disappeared throughout the country in that same time period . And the bodies of 9,000 dead have not been identified . Officials fear the total number of missing could be far higher , because many disappearances go unreported . In October , Calderon said the `` very high '' number of missing people was a growing concern . He listed them among the victims of violence that he described as `` open wounds '' in Mexican society . `` We do n't know the size of the problem , '' the president said during a speech inaugurating a new prosecutor 's office aimed at helping victims . But no matter the statistics , mothers marching in Mexico 's capital Thursday said they would not stop until their children are found . `` This is a call for help , a call for an immediate search , but above all a call of love , '' Garcia said . `` Let our children know that we love them , that we are searching for them and we need them . '' CNN 's Catherine E. Shoichet contributed to this report .
Mothers and others come with pictures of their missing sons and daughters . They say they came to Mexico 's capital on Mother 's Day with the hope of being heard . ` ` They took my son 's life and they took mine , '' one mother says . Human rights commission : More than 5,300 people have disappeared in recent years .