One of the main reasons for this massive migration is the Syrian War, which is causing a lot of damage to the Syrian population. So to escape, they are crossing all Europe to get to countries, like Germany (which is really far from their homes) searching for help and trying to find a job. On their way they are losing a lot of members of their families, so in addition to the big effort they are doing, they are also having psychological problems.
Europe, on the contrary, is trying to host as many refugees as it can, and a lot of countries are helping to find solutions for this issue: Russia, France, England, Germany, Spain, Greece, Italy… are accepting more refugees that they usually accept. Even celebrities and football teams are going to donate some charity help to these refugees.
By the way, all help is good to help Syrian refugees from their war and to try to stop their war and we also have to do as much as possible so that this American politician doesn't become president of his country. This year I have met a Syrian guy and he said that things are really bad, so I hope that this will finish soon.